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Shiurim on Kashrus

Rabbi Dovid Cohen
Administrative Rabbinic Coordinator of the cRc


 

 

Below is a list of catergories of shiurim
presented by Rabbi Dovid Cohen.
Please click on a category to see a listing of titles.

Ha'galas Keilim
Pas Yisroel
Bishul Yisroel
Hilchos Tola'im
Ma'achalei Chalav
Animal Products
Hilchos Pesach
Shemittah
Hafrashas Challah
Tevillas Keilim
Miscellaneous Shiurim

Left click on theto listen to the audio online OR
right click and select SAVE to save it and listen locally.

a

Shiur Date

Description

Audio

Hag'alas Keilim

2007-April 20 Siman 451 Sif 1a
  • Chametz Keilim on Pesach
  • Cheress and plastic
  • New pots
  • Pre-seasoned cast-iron
audio file
2007-April 27 Siman 451 Sif 1b
    Continuation of 451:1a
  • Kashering where you're afraid to break the utensil
  • Libun gamur for cheress
  • Three hag'alos for cheress
audio file
2007-May 4 Siman 451 Sif 2
  • Kashering from the side of the b'liah
  • Heat Exchanger with regeneration
audio file
2007- May 11 Siman 451 Sif 3a
  • Hag'alah instead of ne'itzah
  • Kashering from meat to dairy (part 1)
audio file
2007-May 18 Siman 451 Sif 3b
  • Kashering from meat to dairy (part 2)
  • Kli rishon which is off the fire
audio file
2007-June 1 Siman 451 Sif 3c
  • Kashering at 190 F
audio file
2007-June 8 Siman 451 Sif 3d
  • Rust
  • Polymerized oil (and chiddush to always kasher)
audio file
2007-June 15 Siman 451 Sif 4a
  • Hetairah balah
  • Dairy or meat (or chalav stam) blios
audio file
2007-June 22 Siman 451 Sif 4b
  • Criteria to require libun gamur
audio file
2007-June 29 Siman 451 Sif 4c
  • Spray Dryers
audio file
2007-July 13 Siman 451 Sif 4d
    -Partial Recording-
  • Libun gamur
  • Libun kal as libun
audio file
2007-July 20 Siman 451 Sif 5
  • Levels of hag'alah
  • Piston filler
audio file
2007-July 27 Siman 451 Sif 6a
  • Rov tashmisho
audio file
2007-August 3 Siman 451 Sif 6b
  • Rov Tashmisho with hetairah balah
  • Impossible to kasher based on miut tashmisho
  • Ovens
audio file
2007-August 10 Siman 451 Sif 6c
  • Kashering a glass stove top
audio file
2007-August 31 Siman 451
Sif 7&8
  • Hag'alah when there's a fear of breaking the kli
  • Klei Adamah
audio file
2007-October 26 Siman 451 Sif 9
  • Length of hag'alah
audio file
2007-November 2 Siman 451 Sif 10
  • Kovush of salt & brine
  • General rules of kovush
audio file
2007-November 9 Siman 451 Sif 11a
  • Machvas
audio file
2007-November 16 Siman 451 Sif 11b
  • Libun kal replacing hag'alah (source)
  • Frying pans
audio file
2007-November 20 Siman 451 Sif 12
  • Only part of the kli touched issur
  • How far does ta'am travel
audio file
2007-December 7 Siman 451 Sif 13a
  • Libun kal as hag'alah
audio file
2007-December 28 Siman 451 Sif 13b
  • Welds
  • Trucking
audio file
2008-January 4 Siman 451 Sif 14
  • Zei'ah, hevel and reichah
  • Hood or cover over oven or kettle
audio file
2008-January 18 Siman 451 Sif 15
  • Cover on baking tin
  • Carbon dioxide from chametz
audio file
2008-January 25 Siman 451 Sif 16
  • Even m'lubenes
audio file
2008-February 1 Siman 451 Sif 17
  • Less than a kezayis of chametz
  • Examples of this at factories
audio file
2008-February 8 Siman 451 Sif 18a
  • How clean is clean
  • Microwaves & Dishwashers
audio file
2008-February 22 Siman 451 Sif 18b
  • Fabric
  • Bag House
  • Dental appliances
audio file
2008-February 29 Siman 451
Sif 19 & 20
  • Rachas
  • Tables and counters
audio file
2008-March 7 Siman 451 Sif 21
  • Kashering after kovush
  • Wine barrels
audio file
2008-March 14 Siman 451 Sif 22
  • Beis se'or
audio file
2008-April 11 Siman 451 Sif 23
  • Porcelain enamel
  • Koji Fermentation
audio file
2008-May 2 Siman 451
Sif 24 & 25
  • Varnished wood
  • Cups used occasionally for hot
audio file
2008-May 9 Siman 451 Sif 26
  • Glass
audio file
2008-May 16 Siman 451 Sif 27
  • Glass (continued)
  • Chozer v'niur
audio file
2008-May 23 Siman 452 Sif 1a
  • Return of blios after kashering
  • Nat bar Nat
audio file
2008-June 13 Siman 452 Sif 1b
  • Waiting 12 months
audio file
2008-June 27 Siman 452 Sif 2a
  • Must be aino ben yomo
  • Kashering after stam yayin
audio file
2008-July 11 Siman 452 Sif 2b
  • Calculating aino ben yomo
  • Pegimah
audio file
2008-July 18 Siman 452
Sif 3 & 4 a
  • Keilim which touch
audio file
2008-July 25 Siman 452
Sif 3 & 4b
  • Distillation Columns
audio file
2008-August 1 Siman 452 Sif 5a
  • Chamei Teveriah
  • Steam
audio file
2008-August 8 Siman 452 Sif 5b
  • Sha'ar Mashkim
audio file
2008-August 15 Siman 452
Sif 6 & 7
  • Large pots
  • Rinse after hag'alah
audio file

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Pas Yisroel

2008-October 31 Siman 112 Sif 1
  • Irreligious Jews
  • - Introduction
    - Chasnus
    - Mumar
    - Related Issues
audio file
2008-November 7 Siman 112 Sif 2a
  • Pas Paltar
    - Hetiru Pas
    - Times to be machmir
audio file
2008-November 21 Siman 112
Sif 2b &3
  • Jewish-owned Pas Paltar
  • -Two reasons
    - Iggeros Moshe
  • Definition of a Paltar
audio file
2008-December 12 Siman 112
Sif 4 & 5
  • Pas Yisroel is temporarily available
  • Pas Paltar is more desirable
  • - Better or different
    - Cheaper or more convenient
audio file
2008-December 26 Siman 112 Sif 6a
  • Egg on Bread
  • - In vs. On
    - Knishes
    - Egg on bread
    - French toast
audio file
2009-January 2 Siman 112 Sif 6b
  • Pas Haba'ah B'kisnin
  • -The halacha
    - Wraps
    - Breakfast cereal
    - Pretzels & doughnuts
audio file
2009-January 9 Siman 112 Sif 7
  • Changes in Status
  • - Pas bal habayis from a paltar
    - Edible raw & oleh al shulchan melachim
audio file
2009-January 23 Siman 112 Sif 8
  • Pas Bal HaBayis
  • Bishul Paltar
  • - Maharit Tzahalon
    - Rav Moshe's Opinion
audio file
2009-February 6 Siman 112 Sif 9a
  • Light bulb & glow plug
  • - Gemara
    - Hashlachas Kisem
    - Light bulb & glow plug
audio file
2009-February 13 Siman 112 Sif 9b
  • Boilers
  • - Koach Gavra
    - No cooking in the boiler
audio file
2009-March 13 Siman 112 Sif 10
  • Residual heat
  • - Like hashlachas kisem
    - Mechaber/Rema
    - How long can it last?
    - Convection (and regular) ovens
audio file
2009-March 20 Siman 112 Sif 11
  • Lifnei Iver
  • - Issur D'oraisah
    - Issur D'rabannan
    - Other Considerations
audio file
2009-April 24 Siman 112 Sif 12
  • Late participation in the baking
  • - Karmu P'nei Hapas
    - After ma'achal ben drusai
    - Is chitui helpful
audio file
2009-May 1 Siman 112
Sif 13 & 14
  • Guests who eat pas paltar
  • Bitul B'rov
  • - Avidah lit'amah & ma'amid
    - D'mai and Pas/bishul Akum
    - Kitnios
audio file
2009-May 22 Siman 112 Sif 15a
  • B'lios of Pas Akum
audio file
2009-June 5 Siman 112 Sif 15b
  • Aivah
  • - When it applies
    - Issurim d'rabannan
    - Issurim d'oraisah
    - Bnei L'viyah
audio file
2009-June 19 Siman 112 Sif 16
  • Waiting for Pas Yisroel
  • - Four mil or one mil?
    - Measuring a mil
  • Mechaber's opinion
  • - 112:8 and 112:16
    - Aseres yimei teshuvah
audio file

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Bishul Yisroel

2009-July 10 Siman 113 Sif 1a
  • Parperes
  • The food is oleh if prepared differently
    - Three applications
    - Proofs
audio file
2009-August 7 Siman 113 Sif 1b
  • Shulchan Melachim
  • - Chazon Ish
    - Explanation
audio file
2009-October 16 Siman 113
Sif 2a & 3
  • Mixtures of different foods
  • - Soup and Salad
    - Beer
audio file
2009-October 23 Siman 113 Sif 2b
  • Food is oleh as a tafel
  • Stam Keilim
audio file
2009-November 13 Siman 113 Sif 4
  • Cooking in a Jew's house
  • - Pre-Shulchan Aruch
    - Shulchan Aruch and afterwards
audio file
2009-December 4 Siman 113 Sif 5
  • Kavanah
  • - Boilers
audio file
2010-January 22 Siman 113 Sif 6
  • Jew Started the Cooking
  • - Gemara
    - Rema
audio file
2010-February 12 Siman 113 Sif 7a
  • Pas Yisroel leniencies for bishul Yisroel
  • - Ran
    - Rashba
    - Terumas HaDeshen
    - Shulchan Aruch
audio file
2010-February 26 Siman 113 Sif 7b
  • Pilot Light
audio file
2010-April 30 Siman 113 Sif 8
  • Shiur of Ma'achal Ben Drusai
  • Non-Jew Removed Food From Fire
audio file
2010-June 11 Siman 113 Sif 9a
  • Jew Participated in End of Cooking - Part 1
  • - Background of the machlokes
audio file
2010-July 9 Siman 113 Sif 9b
  • Jew Participated in End of Cooking - Part 2
  • - Mitztamek V'yafeh Lo
    - Hashlachas kisem
    - Practical applications
    - Cooking was undone
audio file
2010-July 16 Siman 113
Sif 10 & 11
  • References to Earlier Discussions
  • Safek Bishul Akum
  • Basis for Commercial Hashgachah
audio file
2010-July 30 Siman 113 Sif 12
  • Fish Which is Salted and then Cooked
  • - Small Fish
    - Passably Edible
    - Hot Smoked Salmon
  • Edible Raw Together With Other Foods
audio file
2010-October 22 Siman 113 Sif 13a
  • Methods of Food Preparation - Part 1
  • - Brining, Pickling, and Smoking
audio file
2010-November 5 Siman 113 Sif 13b
  • Methods of Food Preparation - Part 2
  • - Smoking, and steam
audio file
2010-November 19 Siman 113 Sif 13c
  • Methods of Food Preparation - Part 3
  • - Microwave, Induction cooktop
audio file
2010-December 24 Siman 113 Sif 14
  • Eggs
  • - Edible Raw
    - Oleh al Shulchan Melachim
audio file
2011-January 14 Siman 113 Sif 15
  • Defining Edible Raw
  • - Dates and Salted Fish
    - Hard Agasin
    - Sweet Corn
audio file
2011-March 11 Siman 113 Sif 16
  • Kashering after bishul akum
  • - Is kashering required
    - Choleh
    - Shefah
    - Ger
    - What type of kashering
audio file

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Hilchos Tola'im

2011-June 3 Siman 84 Sif 1
  • Permitted Insects
    - Introduction
    - Water-based insects
    - Bal Tishaktzu
  • Assur Mitichlas Briyaso
audio file
2011-June 10 Siman 84 Sif 2
  • Copepods in New York City Water- Part 1
  • - Background
    - Moschim and nov'im
    - Three opinions
audio file
2011-June 17 Siman 84 Sif 3a
  • Aino miskaven
audio file
2011-June 24 Siman 84 Sif 3b
  • Pour water into another container
  • Choosing a filter
  • Incomplete insect (ever she'ain hanishamah teluyah bo, dissolved during cooking)
audio file
2011-July 1 Siman 84 Sif 4a
  • Raisins
  • Insect eggs
audio file
2011-July 8 Siman 84 Sif 4b
  • Definition of Pirash
  • - Sfekos of the Gemara
    - Im timzah lomar
    -Pirash meis
    - Teiku b'drabannan
audio file
2011-July 15 Siman 84 Sif 5a
  • Flour
  • - Milbin
    - Two questions
    - How is it possible
    - Why think it happened
audio file
2011-July 22 Siman 84 Sif 5b
  • Takalah
    - Business with forbidden foods
    - When some hold it is mutar
    - Practical applications
audio file
2011-July 29 Siman 84 Sif 6a
  • Attached to the ground but didn't crawl
  • Citrus Scale
audio file
2011-August 5 Siman 84 Sif 6b
  • Atzis she'aino nakuv
    - Mushrooms
    - Modern mushroom growing methods
  • Hydroponically grown vegetables
    - Safek issur
    - Leaf miners
audio file

2011-November 11
Siman 84 Sif 6c
  • Size of forbidden insects (part 1) - Questions
    - Whose vision?
    - Visible or iIdentifiable?
    - Mutar or ones?
audio file
2011-December 2 Siman 84 Sif 6d
  • Size of forbidden insects (part 2)-Direct proofs
    - Five grades of insect sizes
    - Poskim's descriptions of insect sizes
    - Nekudah shechorah
    - Citrus scale
audio file
2011-December 16 Siman 84 SIf 6e
  • Size of forbidden insects (part 3)-Indirect proofs)-
    - Lo nitna torah l'malachai hashareis
    - Further details on the lenient opinion
    - Summary
audio file
2011-December 16 Siman 84 Sif 7
  • Where did the infestation occur
  • Why not follow chazaka
  • Calimyrna figs
audio file
2011-December 23 SIman 84 Sif 8a
  • Source for a chiyuv bedikah
  • Checking vegetables on Shabbos (borer, muktzeh, killing the insect)
audio file
2011-December 30 Siman 84 Sif 8b
  • Checking Methods
  • Sampling instead of checking (part 1)
    - Examples
    - Rav Shlomo Kluger
audio file
2012-January 6 Siman 84 Sif 8c
  • Sampling instead of checking (Part 2)
    - Nishmas Adam
    - Support in the Poskim
    - Practical Applications
audio file
2012-January 13 Siman 84 Sif 9a
  • Miut Hamatsui
    - Teraifos
    - Insects
    - Defining miut hamatzui
    - Questions
    - Practical (copepods)
    - Other considerations

audio file
2012- January 20 Siman 84 SIf 9b
  • Arlah
  • Shatnez
audio file
2012- February 3 Siman 84 Sif 9c
  • Safek arlah
    - Introduction
    - Principles
    - Kol d'parish and miut hamatzui
    - Safek kavuah
    - Other reasons to be machmir
audio file
2012-May 4 Siman 84 Sif 9d
  • Raspberries & Blackberries
    - Frozen vs. fresh
    - Finding insects
    - Chiyuv bedikah on frozen berries

audio file
2012-May 25 Siman 84 Sif 9e
  • Broccoli
    - History
    - Removable Issur
    - Hopelessly Lost
    - How Hard to Find It
audio file
2012-June 29 Siman 84 Sif 9f
  • Aruch HaShulchan's limud zechus
  • Gourmet bags
audio file
2012-July 6 Siman 84 Sif 10
  • Found three insects: Insects, Teraifos, Chametz; Sefer Torah
audio file
2012-July 13 Siman 84 Sif 11a
  • Trusting an individual man, woman or child (Part 1): Cases & factors
    - Zavvah
    - Taharos & shechitah
    - Bedikas chametz (Tosfos)
    - Bedikas chametz (Ran)
    - Techum
audio file
2012-July 20 Siman 84 Sif 11b
  • Trusting an individual man, woman or child (Part 2): Man, woman or child as a Mashgiach
    - Bedikas chametz
    - Tevillas keilim for glass
    - Trusting a child
    - Checking vegetables
audio file
2012-August 24 Siman 84 Sif 11c
  • Identifying weak hashgachos (part 1)
    - Everyone has ne'emanus
    - Is he nogeah?
    - Source of the information
    - Lemeichash mebaii
audio file
2012-August 31 Siman 84 Sif 11d
  • Identifying Weak Hashgachos (part 2)
    - Nogeah b'davar for issur v'heter
    - Tzorchei ha'ir
    - If he is ne'eman
audio file
2012-September 28 Siman 84 Sif 12a
  • Frozen Herbs
  • Dehydration
    - Mechanically Dried
    - Sheretz Saruf
audio file
2012-October 12 Siman 84 Sif 12b
  • Dehydrated herbs
  • Freeze Dried Herbs
audio file
2012-October 19 Siman 84 Sif 13
  • Bee Parts
  • Creating a Situation of Ain Kavonoso Levatel
audio file
2012-November 2 Siman 84 Sif 14
  • Broccoli Kugel
audio file
2012-November 9 Siman 84 Sif 15a
  • Birds in Trees
  • Spontaneous Generation
audio file
2012-November 30 Siman 84 Sif 15b-16
  • Barnacle Goose
  • Worms in Meat and Fish
    - Explaining the halacha
    - Added details
    - Anisakis highlights
audio file
2012-December 21 Siman 84 Sif 17
  • Carmine
    - Binas Adam
    - Minchas Yaakov
    - Shellac
audio file

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Hilchos Ma'achalei Chalav

2013-January 4 Siman 115 Sif 1a
  • Properties of kosher milk
    - Gemara
    - Coagulation
    - Color
audio file
2013-January 18 Siman 115 Sif 1b
  • Reason for the Issur
    - Need for the takanah
    - Taste of non-kosher milk
audio file
2013-February 1 Siman 115 Sif 1c
  • Creating Chalav Yisroel:
    - Yotzeh v'nichnas
    - Checking the container
    - DA cows
audio file
2013-February 15 Siman 115 Sif 1d
  • Ne'emanus of a child
  • Using milk which is not chalav Yisroel
    - Pri Chadash/Chasam Sofer
    - Proofs
    - No non-kosher animals in the city
audio file
2013-February 22 Siman 115 Sif 1e
  • Chalav stam
    - Do we accept Pri Chadash?
    - Iggeros Moshe
    - Disagreement with Iggeros Moshe
    - Explanation of Iggeros Moshe
audio file
2013-April 12 Siman 115 Sif 1f
  • Iggeros Moshe's Third Teshuvah
    - American Farmers
    - Indian Micro-farmers
audio file
2013-April 19 Siman 115 Sif 1g
  • Chalav Stam from Other Countries
    - Introduction
    -Trust US Government
    - Law on the Books
    - Country by Country Decision
    - Enforce their Laws
audio file
2013-May 10 Siman 115 Sif 1h
  • Chalav Yisroel via Video Camera
    - "Seeing" via video
    - When to watch
    - Technical hurdles
    - Computerized farms
audio file
2013-May 17 Siman 115 Sif 1i
  • Chalav Stam Keilim
    - Home use
    - Kashering (libun gamur, kovush, gevinas akum, cheress)
audio file
2013-June 14 Siman 115 Sif 2a
  • Overview of the dairy industry:
    - Milk structure
    - Fat (cream, butter)
    - Protein (casein, cheese, whey, yogurt)
    - Sugar (lactose)
    - Water and Minor Components
audio file
2013-June 28 Siman 115 Sif 2b
  • Gevinas Yisroel on Acid-set Cheese
    - American minhag,
    - Rennet in acid-set cheese
    - Skyr & bakers cheese
audio file
2013-July 5 Siman 115 Sif 2c
  • Whey (Part 1)
    - Above yad soledes bo
audio file
2013-July 12 Siman 115 Sif 2d
  • Whey (part 2)
    - Cook-water
    - Animal rennet
    - Kashering after non-kosher whey
audio file
2013-July 26 Siman 115 Sif 2e
  • Gevinas Yisroel Nowadays
    - Simple understanding
    - Chazon Ish
    - Kashering
audio file
2013-August 2 Siman 115 Sif 2f
  • Creating Gevinas Yisroel (Part 1)
    - Rema and Shach
    - Understanding the takanah
audio file
2013-August 16 Siman 115 Sif 2g
  • Creating Gevinas Yisroel (Part 2): Applications of Rema's opinion
    - Yotzeh V'nichnas
    - Video Camera
    - Control Room
audio file
2013-August 30 SIman 115 Sif 2h
  • Creating Gevinas Yisroel (Part 3): Details of Shach's opinion
    - Ownership
    - Computerized additon of rennet
    - Must you see cheese-making
  • Who do we pasken like
audio file
2013-October 4 Siman 115 Sif 2i
  • Cheese Finishing
    - Pressing
    - Salting and Brining (dry salting, brine salting)
    - Cutting and Packaging (kashering)
audio file
2013-October 11 Siman 115 Sif 3a
  • Butter
    - Three opinions
    - Butter nowadays
audio file
2013-October 18 Siman 115 Sif 3b
  • Milk Powder & Acid Casein
audio file
2013-November 8 Siman 115 Sif 3c
  • Milk powder and casein (revision)
  • Cheese vs. butter
    - Cheese from chalav akum
    - Cheese vs. butter
audio file
2013-November 15 Siman 115 Sif 3d
  • Three ha'amados
    - Source
    - Ratios
    - Kefir grains,
    - Which issurim
audio file

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Animal Products

2013-November 22 Siman 81 Sif 1a
  • Sources of the Halacha of Yotzeh

audio file
2013-December 6 SIman 81 Sif 1b
  • Techeles from non-kosher fish
audio file
2013-December 13 Siman 81 Sif 1c
  • Mei Raglayim (urine)
    - Coffee from elephant dung
    - Premarin
audio file
2013-December 25 Siman 81 Sif 1d
  • Homeopathic Remedies:
    - Introduction
    - Active ingredients
    - Bitul (ChaNaN on cold blends, bitul on items added intentionally),
    - Inactive ingredients
    - Is it a refuah yeduah
audio file
2013-December 27 Siman 81 Sif 2a
  • Milk Nowadays (Part 1):
    - Rov behaimos ainun teraifos
audio file
2014-January 3 Siman 81 Sif 2b
  • Milk Nowadays (part 2):
    - Milk from hundreds of cows
audio file
2014-January 17 SIman 81 Sif 3-4
  • Shellac (pirshah)
audio file
2014-February 7 Siman 81 Sif 5a
  • Yotzeh from a Kosher Animal (Halacha)
    - Meimei chalav
    - Machlokes
    - Proofs and explanation
    - Poskim
audio file
2014-February 14 Siman 81 Sif 5b
  • Yotzeh From a Kosher Animal (Applications)
    - Colostrum
    - Lanolin
audio file
2014-February 21 Siman 81 Sif 5c
  • Foods forbidden to non-Jews
    - Milk
    - Eggs
    - Casings
audio file
2014-March 7 Siman 81 Sif 6
  • Methanol Recovered from a Biodiesel Reaction
    - Our halacha
    - Biodiesel production
    - Methanol recovered
audio file
2014-May 2 Siman 81 Sif 7a
  • Human Byproducts (Part 1): Flesh
audio file
2014-May 9 Siman 81 Sif 7b
  • Human Byproducts (part 2):
    - Milk, blood and yotzeh
    - Cadavers
audio file
2014-May 23 Siman 81 Sif 7c
  • 12 Months or a Year
    - General rule,
    - Nursing for 24 months
    - Teraifah
    - Insects
audio file
2014-May 30 Siman 81 Sif 7d
  • Mother's Milk- Chalav Nachris
    Timtum Halev (part 1) :
    -Sakanah vs. timtum
    - Perform the forbidden act
    - Time-bound issurim
audio file
2014-June 6 Siman 81 Sif 7e
  • Timtum Halev (part 2):
    - From eating 'heter'
    - Contradiction,
    - More-extreme positions
    - Compromise positions
audio file
2014-June 13 Siman 81 Sif 8 & 9
  • Bee Products:
    - Shulchan Aruch 84:13
    - Honey
    - Retail honey
    - Royal jelly
    - Beeswax
    - Pollen,
    - Bee bread
    - Bee propolis
    - Other bee products
audio file

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Pesach

2005-April Belgian Endives for Marror audio file
2008-January Carbon Dioxide for Pesach audio file
2008-March Coffee and Tea for Pesach audio file
2009-March Matzah for Celiacs audio file
2009-March Allergies on Pesach audio file
2012-March 9 Kitnios Shenishtaneh audio file
2012-March 16 Grape Juice at the Seder- Part I audio file
2012-March 21 Grape Juice at the Seder - Part II audio file
2012-March 23 Choosing a Machine Matzah audio file
2013-February 28 Which Foods Might Be Chametz Part 1-Examples
- Basic chametz
- Malt uses
- Ethyl alcohol
- Glucose uses
- Other
audio file
2013-March 1 Which Foods Might Be Chametz Part 2-Halacha
- Tempering of Flour -chametz, matzah
- Oats
- Bran & Chaff - koji fermentation, furfural
audio file
2013-March 6

Hag'alah Short Course
- Introduction
- Decide - just hag'alah, materials
- Clean - rust, holes, cracks &crevices, necks
- Aino ben yomo
- Boiling water -general, pot of water, pour boiling water
- Rinse

(To see a video of the shiur click here)

audio file
2013-March 8
  • Hachana in a Pesach Hotel
    - Waiting
    - Marbeh B'Shiurim
    - Incomplete Hachanah
    - Non-Jew Performing Hachanah
audio file
2013-March 15
  • Denatured Alcohol
    - Description
    - Rejected Opinions
    - Edible in the Denatured Form
    - Removability of the Denaturant
    - Edibility Reconsidered
    - Miscellaneous (other ingredients, non-beverage drawback, alcohol source, nifsal mei'achilas kelev)
audio file
2013-March 22
  • Karpas vegetable choice
    - Introduction
    - Vegetables to Avoid
    - Karpas/Celery
    - Other Preferences
audio file
2013-March 28
  • Supermarket Chametz After Pesach
    - Introduction
    - Zecher Yitzchok
    - Mechiras Chametz (form, chametz purchased on Pesach, sale of shares)
    - Conclusion
audio file
2014- March 14
  • Milk from cows that ate chametz
    - Kol yamehah
    - Zeh v'zeh gorem
    - What do they eat
    - Peh she'asid
    - Practical application
audio file
2014-March 21
  • Play-doh on Pesach (Part 1)
    - Nifsal mei'achilah
    - Chavas Da'as
audio file
2014-March 28
  • Play-doh on Pesach (part 2)
    - Nuksheh
    - Yichdo l'yeshiva
audio file
2014- April 4
  • Kashering with libun (part 1)
    - Temperature
audio file
2014-April 11
  • Kashering with libun (part 2)
    - Which method to use
    - How to perform libun
audio file
2014-April 7 audio file
2015-March 11 audio file
2015-March 13 audio file
2015-March 19
  • Pesach Information for Rabbis
    - Principles
    - Non-Foods
    - Foods
audio file
2015-March 20
  • Hydroponically Grown Vegetables
    - Insects
    - Shemittah
    - Berachos
    - Marror
audio file
2015-March 22
  • Pesach Basics
    - Resources
    - Foods
    - Non-foods
    - Medicines
audio file
2015-March 27
  • Identifying Kitnios
    - 'New' foods
    - Kitnios vs. midgan
    - Seeds not eaten
    - Quinoa
    - Cottonseed oil
    - Hemp
audio file
2016-April 3
  • Foods for Pesach
    Given at Yeshivas Migdal Torah's annual pre-Pesach event
audio file
2016- April 15
  • Rotzeh B'kiyumo
audio file
2017-March 5
  • Non-Foods and Foods for Pesach
    - Coated items
    - Things which go into the mouth
    - Medicines & cosmetics
    - Gluten-free
    - Nuts
    - Coffee
    - Fruits & vegetables
    - Meat & poultry
audio file
2017-April 4
  • Denatured Alcohol Update
    - Description
    - Rejected positions
    - Edible in the denatured form
    - Removability of the denaturant
    - Edibility reconsidered
    - Source of the alcohol
audio file

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Shemittah

2014-June 20 Timing A
  • Overview
    - Shemittah is D'rabannan

Click here for the accompanying handout

audio file
2014-June 27 Timing B
  • When is shemittah
  • Havtachah of shemittah

Click here for the accompanying handout

audio file
2014-July 11 Timing C
  • Determining the year
    - General points
    - Fruits and vegetables (fruit, esrog, citrus, grains, kitnios, vegetables)
audio file
2014-July 18 Timing D
  • Women
  • Leap Year
audio file
2014-July 25 Location A
  • Borders of Eretz Yisroel
    - Olei Mitzrayim & Olei Bavel
    - Identification of the border
    - Southern border
    - Hor Hahor
audio file
2014-August 1 Location B
  • Greenhouses
    - Introduction
    - Atzis she'aino nakuv
    - Zoreah babayis
    - Other factors
    - Summary
audio file
2014-August 22 Avodas Karka A
  • Melachos D'oraisah in Avodas Karka
    - Avos & toldos
    - Zoreah
    - Zomer
    - Kotzer & botzer
    - Choresh & noteah
audio file
2014-August 29 Avodas Karka B
  • Melachos D'rabannan
    - General rules
    - Examples for non-farmers
audio file
2014-September 5 Avodas Karka C
  • Issur on Land or Person?
  • Hefker
  • Meshumar & Ne’evad
audio file
2014-September 12 Avodas Karka D
  • Sefichin for Consumers
    - Applications based on logic of issur (fruit, four fields, grows wild, animal food, field of non-Jew)
    - Other Details (olei Mitzrayim, hana'ah, items without kedushas shevi'is, harvested in 8th year)
audio file
2014-September 19 Avadas Karka E
  • Sefichin for farmers
    - Planted in the sixth year
    - Grains & kitnios
audio file
2014-October 31 Shemittah Produce A
  • Introduction to Kedushas Shevi’is
    - Overview
    - Mitzvah to eat?
    - Gramah
    - Leftovers and Shemittah bins
    - Feeding children
audio file
2014-November 14 Shemittah Produce B
  • Other Elements of Kedushas Shevi'is
    - Keep in Eretz Yisroel
    - Sechorah
    - Biur
audio file
2014-December 5 Shemittah Produce C
  • Which Items Have Kedushas Shevi’is
    - General rules
    - Yevul nochri (non-Jewish produce)
    - Animal food
audio file
2014-December 26 Shemittah Produce D
  • Which Items Have Kedushas Shevi'is (Part 2):
    - Herbs and flowers
    - Ta'aruvos and b'lios
audio file
2015-January 9 Shemittah Produce E
  • Using Shemittah Produce: lemon, apple, oil, wine, animal food, picking fruit, cooking & pureeing, miscellaneous
audio file
2015-January 23 Shemitta
Heter Mechira A
  • Introduction
  • Prerequisites
    - Yevul nochri
    - Shemittah is d'rabannan
    - Desperate situation/dochak
audio file
2015-January 30 Shemitta
Heter Mechira B
  • Inherent Halachic Issues Part 1
    - Tabu
    - Ha'aramah/Gemiras Da'as (ha'aramah be'd'rabannan, mechiras chametz, Devarim shebilev)
audio file
2015-February 6 Shemitta
Heter Mechira C
  • Inherent Halachic Issues Part 2
    - Lo Sechanem (shelichus is required, lo sechanem to sell land, sheliach lid'var aveirah, invalidates the shelichus)
audio file
2015-February 20 Shemitta
Otzar Beis Din A
  • Viability
    - Source and logic
    - Practical implementation
audio file
2015-March 6 Shemitta
Otzar Beis Din B
  • Price
  • Biur
    - Mtzvah of biur
    - Kedushas shevi'is after biur
audio file
2015-March 4 Summary
  • Summary of First 6 Shemittah Topics:
    - General Points (hashkafah, by the numbers)
    - Consumers (years, borders, yevul nochri, greenhouses, heter mechirah, otzar Beis Din, kedushas shevi'is)
    - Farmers (heter mechirah, keep shemittah, otzar Beis Din, Keren Hashvi'is)
audio file
2015-April 17 End of
Shemitta A
  • Shemittas kesafim and Pruzbul
audio file
2015-May 8 End of
Shemitta B
  • Succos after shemittah
    - Aravos
    - Hadassim
    - Esrog
    - Lulav
    - Bamboo for s'chach
audio file

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Hafrashas Challah

2015-May 15 Siman 322 Sif 1-3
  • Commercial Hafrashas Challah Methods
    - Traditional
    - Dough-balls
    - Tevel dough or matzah
    - Sell to non-Jew
  • Parts of the Mitzvah
  • Most Jews Live in Eretz Yisroel
audio file
2015-May 22 Siman 322 Sif 4-5a
  • Three lands for hafrashah
    - Hafrashah nowadays
    - Giving challah to a child
audio file
2015-June 5 Siman 322 Sif 4-5b
  • Kezayis for hafrashah
  • Burning the challah
  • Separation and burning in the tevel-dough system
audio file
2015-June 19 Siman 323 Sif 1a
  • Is dough tevel before hafrasha
audio file
2015-July 17 Siman 323 Sif 1b
  • Shee'arehah Nikkarim and the Dough-Ball System
    - Mukaf
    - Bavli & Yerushalmi Sources
    - Dough-Ball System
audio file
2015-August 7 Siman 324 Sif 1
  • Shiur Challah
    - Tzlach's question
    - Size of Eggs & Etzbo'os
    - Practical Halacha and Shiurim

Click here to see the accompanying slides

audio file
2015-August 14 Siman 324 Sif 2
  • Tziruf of Different Minim
    - Kilayim/Terumah
    - Batter-view of tziruf
    - Nashuch/Ballul
audio file
2015-August 28 Siman 324 Sif 3
  • Whole Wheat Flour
    - Flour production
    - Recombination method
    - Yerushalmi's explanation
    - Germ and wheat gluten
audio file
2015-September 11 Siman 324 Sif 8a
  • Flour from different years (Part 1)
    - Issue for the tevel matzah system
    - In Chutz La'aretz
audio file
2015-October 9 Siman 324 Sif 8b
  • Flour from Different Years (Part 2)
    - Blended flour
audio file
2015-October 23 Siman 324 Sif 11
  • Limiting Reach of a Hafrashah,
  • Hafrashah from Matzah on Dough
audio file
2015-November 20 Siman 325 Sif 1a
  • Tziruf Sal (basic halachos)
    - Even after baking,
    - Oven
    - Cloth
audio file
2015-December 4 Siman 325 Sif 1b
  • Tziruf Sal (practical applications)
    - Accepting of mixture
    - Packaging and multiple packages
    - Large container and refrigerators
audio file
2015-December 11 Siman 325 Sif 2a
  • Mukaf
    - Gr"a's three categories
    - Proofs and details
    - Shulchan Aruch and Shach
    - In the tevel hafrashah system
audio file
2015-December 18 Siman 325 Sif 2b
  • Mukaf in Chutz La’aretz
    - Standard case
    - Mukaf in two batters
audio file
2016-January 8 SIman 325 Sif 2c
  • Sinning to save else from sinning (חטא בשביל שיזכה חבירו )
    - Hafrashah from non-mukaf
    - Seemingly contradictory Gemaros
    - Rishonim’s resolutions
    - Save from shmad
    -Other examples
audio file
2016-January 15 Siman 326 Sif 1-2
  • Issah Ha’asuyah Lechalek
    - Basic rules
    - Basis and logic
    - Applications
audio file
2016-February 5 Siman 327 Sif 1
  • Hafrashos for the Future
    - Flour has not yet arrived
    - Brachos on tevel hafrashah system
    - Hafrashah for Shabbos
audio file
2016-February 28 Siman 328 Sif 1a
  • Performing the hafrashah
    - Verbalizing the hafrashah
    - Wrding of the bracha
    - Standing for the bracha
    - Designating the challah
audio file
2016-March 18 Siman 328 Sif 3a
  • Shelichus for Hafrashah
    - The need for shelichus
    - Zachin mei’adam
    - Trust the sheliach
audio file
2016-April 1 Siman 328 Sif 3b
  • Shelichus for Companies (challah and mechiras chametz):
    - Authorization
    - Non-Jewish Company
    - Mumar
    - Manager
    - Sheliach Oseh Sheliach
audio file
2016- May 6 Siman 329 Sif 1-3a
  • Belilah Raccah and Belilah Avah (part 1)
    - Rash and Rabbeinu Tam (donuts, pasta, pet food)
audio file
2016-May 13 Siman 329 Sif 1-3b
  • Belilah Raccah and Belilah Avah (part 2)
    - When to do hafrashah for belilah rakah (pancakes, sheet cakes)
audio file
2016-May 20 Siman 329 Sif 7
  • Panko Bread Crumbs
    - Process
    - Hafrashas challah
    - Pas Yisroel
    - Kutach in Shulchan Aruch
audio file
2016-June 3 Siman 329 Sif 8
  • Noodle kugel:
    - Jewish ownership
    - Mei peiros
    - Need for hafrashah on pasta
    - Baking after cooking
    - Is kugel ‘baked’
    - Tureisah d’nahamah
    - Hafrashah in noodle stage
audio file
2016-June 10 SIman 330 Sif 1-3
  • Dough of a non-Jew:
    - Commercial settings
    - Review of the tevel hafrashas challah system
audio file

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Tevillas Keilim

2016- July 08 Siman 120 Sif 1a
  • Materials (Part 1)
    - Gemara
    - Metal
    - Glass
audio file
2016-July 15 Siman 120 Sif 1b
  • Materials (Part 2)
    - Plastic
    Cardboard
    - Paper
    - Aluminum and other “new” metals
    - Other materials
audio file
2016-August 5 Siman 120 Sif 1c
  • Where to Perform Tevillah:
    - Mikvah
    - Lake or river
    - Snow
audio file
2016-August 12 Siman 120 Sif 1-3
  • Tevillah without a bracha
  • How to perform tevillah
    - Timing
    - Holding the utensil
    - Bracha on tevillah
audio file
2016-September 16 Siman 120 Sif 4
  • Food Contact (Klei Seudah – Part 1)
    - Source
    - Miinor separations (aluminum foil)
    - Defining food contact (nut cracker)
    - Unintentional contact (can opener)
    - Covers
    - Barbecue cover
    - Toaster oven
    - Crock pot ceramic base
audio file
2016-September 23 Siman 120 Sif 5a
  • Food Preparation (Klei Seudah – Part 2a)
    - Shechitah knife
    - Reddler
    - Rolling pin and other examples
audio file
2016-October 28 Siman 120 Sif 5b
  • Storage containers
  • Toaster
  • Blech
  • Sandwich-Maker
  • Immersion Blender
  • Meat Thermometer
  • Flour Sifter
  • Food Scale
  • Immersion Heater
audio file
2016-December 9 Siman 120 Sif 6-7a
  • Layered or Coated Utensils
    - Basic halachos
    - Ma'amid
    - Disposable spice grinders
audio file
2016-December 16 Siman 120 Sif 6-7b
  • China and Teflon
audio file
2016-December 30 Siman 120 Sif 8a
  • Klei sechorah
    - Jew purchased for non-food use
    - Tevillah before it was required
  • Tevillah at a Houseware store
    - Storekeepers
    - Tevillah after the sale
    - Tevillah for a present
audio file
2017-January 27 Siman 120 Sif 8b
  • Containers of packaged food
    - Sold by a non-Jewish company (emptying slowly, not a kli, creating a kli via thought, disposable spice grinder)
    - Sold by a Jewish company
audio file
2017-March 17 Siman 120 Sif 8c
  • Restaurant, dish rental and other businesses
    - Responsibility of the Hechsher?
    - Need for tevillah
    - Bitul of dishes which had no tevillah
audio file
2017-April 21 Siman 120 Sif 8d
  • Temporary use without tevillah:
    - General halacha
    - Microwave tray
  • Disposable aluminum pans
audio file
2017-May 12 Siman 120 Sif 9
  • Kosher dish in a non-kosher restaurant
  • Genaivas Da’as
    - Examples and reasons
    - He fooled himself
    - Intention
audio file
2017-May 19 Siman 120 Sif 10a
  • Retinning
  • Uman Koneh B’shvach Kli
    - Basic halacha
    - Factory workers
audio file
2017-June 16 Siman 120 Sif 10b
  • Pump pot or urn manufactured for Jews
    - Basic idea
    - Uman koneh b'shvach kli
    - Kinyanim
    - What to acquire
    - Oversight
    - Distribution
audio file
2017-July 7 Siman 120 Sif 10c
  • Keurig Machines
    - Description of the machine
    - Reasons why tevillah might not be required
    - 'Break' and fix by a Jew
audio file
2017- July 14 Siman 120 Sif 11a
  • Non-Jew temporarily owned item (mechiras chametz)
  • Utensil owned by a Jew and non-Jew (partnership)
  • Prohibition to use utensil before tevillah
audio file
2017- August 4 Siman 120 Sif 11b
  • Electrical Appliances
    - Damage from tevillah (electrical circuit issues, corrosion)
    - Asui leshamesh im hakarka (Chelkas Yaakov)
    - Can’t be toiveled
audio file
2017-August 11 Siman 120 Sif 11c, 12, 13
  • Utensils which did not have tevillah
audio file
2017-September 1 Siman 120 Sif 14-15a
  • Who can perform tevillah (kavanah, child, non-Jew)
audio file
2017-September 15 Siman 120 Sif 15b
  • Tevillah for a Ger's items
audio file
2017-October 27 Siman 120 Sif 16a
  • Shabbos and Yom Tov
    - Tevillas keilim on Shabbos
    - Give a present
    - Muktzeh
audio file
2017-November 3 SIman 120 Sif 16b
  • Give utensil to a non-Jew
    - Temporary or permanent solution
    - Give part to a non-Jew
    - Hefker
audio file
2017-November 10 Siman 120 Sif 16c
  • Large equipment
    - Reasons why tevillah might not be necessary
    - Are tumah and tevillah related
    - Holds more than 40 se’ah
    - Oven racks
    -Refrigerator shelves
    - Glass tabletop
audio file

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Miscellaneous Shiurim

2007-May Whiskey audio file
2008-July Steam audio file
2009-January Turkey, White Leghorn Chicken, and Zebu audio file
2009-January Bishul Akum audio file
2009-March Matzah for Celiacs audio file
2009-May Medicine audio file
2009-June Whiskey - Part 1 audio file
2009-June Whiskey - Part 2 audio file
2009-June Insects audio file
2009-December Shabbos Catering audio file
2010-January Chalav Yisroel audio file
2010-February Bishul Akum audio file
2010-May Worms in Fish audio file
2010-November Creating Bishul Yisroel audio file
2011-November The High Cost of Jewish Living (Rabbi Sholem Fishbane) audio file
2011-December

Size of Forbidden Insects

audio file
2012-January Joulies audio file
2012-February Vitamins & Medicine: Do They Need To Be Kosher?
-Given at the Midwest Agudah Convention
audio file
2012-February Keeping Kosher Properly When On The Road
-Given at the Midwest Agudah Convention by Rabbi Sholem Fishbane
audio file
2012-May

Nosein Ta'am Lifgam (part 1): Dishwashers, pegimah of a steam system

audio file
2012-May Nosein Ta'am Lifgam (part2): Nutramigen, Denatured Alcohol, Toiletries audio file
2012-June Why Food Requires Hashgacha audio file
2013-January Insects in Fruit given at Timber Ridge, Lake Geneva audio file
2013-February Coffee on Shabbos audio file

   
2013-April
  • Milk and Meat in the Home Part 1
    - Foods - dairy bread, imitation items
    - Food preparation - separations (oil and spices, double oven), oven/microwave/stovetop, kashering back and forth
audio file
2013-April
  • Milk and Meat in the Home Part 2
    - Waiting six hours - general rules, meat or dairy pot, hard cheese
    - Non-food use - pet food, other benefits
    - Meat and fish - separations, bitul
audio file
2013-June Kashrus in the KINS Kitchen audio file
2013-July Cheese and Gelatin audio file
2013-October Keeping Kosher audio file
2013-December
  • Coffee and Tea
    - Coffee: inherent concerns, office settings, Keurig machines
    - Tea : inherent concerns, Shabbos, Teavana stores
    - Joulies
audio file
2014-February Shemittah (Middle School) audio file
2014-September Shemittah for Rabbis audio file
2014-October Shemittah for Consumers audio file
2015-September Esrog of Shemittah audio file
2016-May

Produce from Eretz Yisroel: shemittah, arlah, terumos & ma’asros
Click here for the accompanying slides

audio file
2016-August
  • Yoshon Basics
    - Basics
    - Guide to Chodosh
    -Details
    - Yoshon in Chicago
audio file
2016-October
  • Adding water to an electric urn on Yom Tov
    - Introduction
    - Basic operations
    - One coil vs. two coils
    - Grama
audio file
2017-January
  • Davar sheyesh lo matirim
    - Yoshon (malt, milling)
    - Shemittah
    - Chazusah
    - Insects (broccoli, orange juice)
    - Tevillas keilim
    - Chametz
audio file
2017-March
  • Ta’anis Esther in Taiwan: halachic dateline

audio file
2017-March
  • Kashrus of Medicine
    - Liquids and chewables
    - Edibility
    -Ach’shvei
    - Severity of illnes
    - Flavors
    - Gelcaps/Softgel
    - Iingredients
    - Substitutions
    - Decision tree
    - General rules

audio file
2017-September
  • Pas Yisroel During Aseres Yimei Teshuvah
audio file

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HaRav Gedalia Dov Schwartz, Shlit"a
Rosh Beth Din

HaRav Yona Reiss, Shlit"a
Av Beth Din

 

Rabbi Sholem Fishbane
Kashruth Administrator

Rabbi Levi Mostofsky
Executive Director

© Copyright 2017 Chicago Rabbinical Council. All rights reserved.
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