Rabbi Dovid Cohen
Chicago Rabbinical Council - cRc Kosher
Rabbi Dovid Cohen is the Administrative Rabbinical Coordinator at cRc Kosher, where his work includes ingredient review and approval, the flavor industry, and finance. He previously coordinated halachic policy for OU Kosher for seven years and teaches practical contemporary kashrus through the Kashrus Halacha podcast and sefarim.
Shiurim
- How Clean is Clean, Microwaves, Dishwashers (Kashering #28 - Shulchan Aruch 451:18)
Rabbi Dovid Cohen
How clean is clean Microwaves & Dishwashers
- Why Food Requires Hashgachah (Kosher Classes #20)
Rabbi Dovid Cohen
Why Food Requires Hashgachah
- Hag'alah Short Course (Pesach #12)
Rabbi Dovid Cohen
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 See the video of the shiur at here
- Trucking (Kashering #23 - Shulchan Aruch 451:13)
Rabbi Dovid Cohen
Welds Trucking
- Butter (Kosher Dairy #19 - Shulchan Aruch 115:3)
Rabbi Dovid Cohen
Butter Three opinions Butter nowadays
- Whole Wheat Flour (Hafrashas Challah #8 - Shulchan Aruch 324:3)
Rabbi Dovid Cohen
Whole Wheat Flour Flour production Recombination method Yerushalmi's explanation Germ and wheat gluten
- Wine and Alcohol (Hashgachah Practicum #47 - Consumer H)
Rabbi Dovid Cohen
Wine and Alcohol: Wine (stam yayin, mevushal); Secondary halachos (bracha, from concentrate, Pesach seder, music); Alcoholic beverages (ingredients, equipment, aging, chametz she'avar alav haPesach). See seforim by Rabbi Cohen at
- Glatt and Beis Yosef (Hashgachah Practicum #25 - Meat B)
Rabbi Dovid Cohen
Glatt and Beis Yosef: Introduction; Procedure (access diaphram/tarpash, bedikas pnim, bedikas chutz); Methods of checking (הכנסת יד הבודק, hagbah, miuch and mishmush, klipah); Glatt; Chalak - Beis Yosef; Sephardim; Dakos. See seforim by Rab
- Comparing Fish Fillets (Bitul and Blios #37 - Shulchan Aruch YD 101:7-8)
Rabbi Dovid Cohen
Comparing Fish Fillets: Background; Fish fillets; Skin tags. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Libun Gamur (Hashgachah Practicum #58 - Kashering E)
Rabbi Dovid Cohen
Libun Gamur: When; How; Libun gamur vs. libun kal. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Papain (Bitul and Blios #63 - Shulchan Aruch YD 110:9)
Rabbi Dovid Cohen
Papain: Papaya; Papain; Peel; Papaya Revisited; Eggplant Plus. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Utensils Which Did Not Have Tevillah (Tevillas Keilim #20 - Shulchan Aruch 120:11-13)
Rabbi Dovid Cohen
Utensils which did not have tevillah Buy the book at www.kashrushalacha.com
- Part of Kli Touched Issur (Kashering #21 - Shulchan Aruch 451:12)
Rabbi Dovid Cohen
Only part of the kli touched issur How far does ta'am travel
- Gevinas Yisroel on Acid-Set Cheese (Kosher Dairy #11 - Shulchan Aruch 115:2)
Rabbi Dovid Cohen
Gevinas Yisroel on Acid-set Cheese American minhag Rennet in acid-set cheese Skyr & bakers cheese
- Cheese Finishing (Kosher Dairy #18 - Shulchan Aruch 115:2)
Rabbi Dovid Cohen
Cheese Finishing Pressing Salting and Brining (dry salting, brine salting) Cutting and Packaging (kashering)
- Is Dough Tevel Before Hafrashah (Hafrashas Challah #4 - Shulchan Aruch 323:1)
Rabbi Dovid Cohen
Is dough tevel before hafrasha
- Tata'ah Gavar (Bitul and Blios #53 - Shulchan Aruch YD 105:3)
Rabbi Dovid Cohen
Tata'ah Gavar (תתאה גבר) : Basics; Tumbler; Heat sealer; Shrink tunnel. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Chatichah Hariuyah Lehiskabed (Bitul and Blios #36 - Shulchan Aruch YD 101:1)
Rabbi Dovid Cohen
Chatichah Hariuyah Lehiskabed (חתיכה הראויה להתכבד) : Basic halachos; Definition; Raw meat; Blends (part is part is not, only together). See seforim by Rabbi Cohen at www.kashrushalacha.com
- Worms in Fish (Kosher Classes #13)
Rabbi Dovid Cohen
Worms in Fish
- Issah Ha'asuyah Lechalek (Hafrashas Challah #17 - Shulchan Aruch 326:1-2)
Rabbi Dovid Cohen
Issah Ha’asuyah Lechalek Basic rules Basis and logic Applications
- Non-Kosher Materials [Part 2] (Hashgachah Practicum #9 - Ingredients C)
Rabbi Dovid Cohen
Non-Kosher Materials - Part 2 Agricultural Products; Ma'achalei Akum - bishul akum, pas akum, stam yayin; Grains; Chodosh / yoshon; Hafrashas challah; Time and Place; Pesach - chametz, chametz she'avar alav haPesach, Jewish distributors; Ar
- Meat Basics (Hashgachah Practicum #24 - Meat A)
Rabbi Dovid Cohen
Meat Basics: Shechitah; Teraifos; Nikkur; Melichah; Simanim. See seforim by Rabbi Cohen at www.kashrushalacha.com
- High School Kosher Q&A [Part 2] (Kosher Classes #61)
Rabbi Dovid Cohen
High School Q&A [Part 2]; Hot dogs in stadium; Vaping; Toothpaste and mouthwash; Beverages; Shellac See seforim by Rabbi Cohen at www.kashrushalacha.com
- Belilah Raccah and Belilah Avah [Part 1] (Hafrashas Challah #22 - Shulchan Aruch 329:1-3)
Rabbi Dovid Cohen
Belilah Raccah and Belilah Avah (part 1) Rash and Rabbeinu Tam (donuts, pasta, pet food)
- Kashrus Scandals (Bitul and Blios #62 - Shulchan Aruch YD 110:5)
Rabbi Dovid Cohen
Kashrus Scandals: Assumptions; Issues - Four Questions; Raw meat in store; Prepared food in store; Food taken home; Kashering. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Eggs (Bishul Yisroel #35 - Shulchan Aruch 113:14)
Rabbi Dovid Cohen
Eggs Edible Raw Oleh al Shulchan Melachim Buy the book at www.kashrushalacha.com
- Wraps (Q&A 35)
Rabbi Dovid Cohen
Wraps See seforim by Rabbi Cohen at www.kashrushalacha.com
- Yoshon Basics (Kosher Classes #34)
Rabbi Dovid Cohen
Yoshon Basics Basics Guide to Chodosh Details Yoshon in Chicago
- Berries (Q&A 98)
Rabbi Dovid Cohen
Berries See seforim by Rabbi Cohen at www.kashrushalacha.com
- Pet Food (Q&A 50)
Rabbi Dovid Cohen
Pet Food See seforim by Rabbi Cohen at www.kashrushalacha.com
- Filet Mignon (Q&A 20)
Rabbi Dovid Cohen
Filet Mignon: See seforim by Rabbi Cohen at www.kashrushalacha.com
- Ta'anis Esther in Taiwan (Kosher Classes #37)
Rabbi Dovid Cohen
Ta’anis Esther in Taiwan Halachic dateline
- Irreligious Jews (Pas Yisroel #1 - Shulchan Aruch 112:1)
Rabbi Dovid Cohen
Irreligious Jews Introduction Chasnus Mumar Related Issues Buy the book at www.kashrushalacha.com
- Shellac (Q&A 31)
Rabbi Dovid Cohen
Shellac See seforim by Rabbi Cohen at www.kashrushalacha.com
- End of Shemittah (Hashgachah Practicum #21 - Shemittah D)
Rabbi Dovid Cohen
End of Shemittah: Shemittas kesafim; Pruzbul; Arba minim (aravah, hadassim, esrog, lulav); Post-shemittah; See seforim by Rabbi Cohen at www.kashrushalacha.com
- Waiting 12 Months (Kashering #38 - Shulchan Aruch 452:1)
Rabbi Dovid Cohen
Waiting 12 months
- First Time Making Pesach (Pesach #38)
Rabbi Dovid Cohen
First time making Pesach Schedule Cleaning the house Shopping Kashering Switching over Erev Pesach Seder preparations Chametz after Pesach
- Joulies (Kosher Classes #16)
Rabbi Dovid Cohen
Joulies
- Zei'ah (Bitul and Blios #9 - Shulchan Aruch 92:8)
Rabbi Dovid Cohen
Zei'ah Basic halachos; Stovetop; Oven; Microwave oven; Hookah; e-Cigarettes; Zei'ah b'almah; Media. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Machvas (Kashering #19 - Shulchan Aruch 451:11)
Rabbi Dovid Cohen
Machvas
- Esrog of Shemittah (Kosher Classes #32)
Rabbi Dovid Cohen
Esrog of Shemittah
- Sushi (Q&A #59)
Rabbi Dovid Cohen
Sushi See seforim by Rabbi Cohen at www.kashrushalacha.com
- Waiting for Pas Yisroel (Pas Yisroel #17 - Shulchan Aruch 112:16)
Rabbi Dovid Cohen
Waiting for Pas Yisroel Four mil or one mil? Measuring a mil Mechaber's opinion 112:8 and 112:16 Aseres yimei teshuvah Buy the book at www.kashrushalacha.com
- Hag'alah Instead of Ne'itzah (Kashering #4 - Shulchan Aruch 451:3)
Rabbi Dovid Cohen
Hag'alah instead of ne'itzah Kashering from meat to dairy [Part 1]
- Chalav Yisroel Via Video Camera (Kosher Dairy #8 - Shulchan Aruch 115:1)
Rabbi Dovid Cohen
Chalav Yisroel via Video Camera "Seeing" via video When to watch Technical hurdles Computerized farms
- Chocolate (Q&A 97)
Rabbi Dovid Cohen
Chocolate See seforim by Rabbi Cohen at www.kashrushalacha.com
- Bionaphtha (Kosher Anthology 4)
Rabbi Dovid Cohen
Bionaphtha: Naphtha and bionaphtha; Legal fictions (mass balance transfer, ethylene pipeline); Nishtaneh (machlokes, questions, and answers); Masriach, min b'mino, known heter, human intervention; Nifsal mei'achilah. See seforim by Rabbi Co
- Sefichin for Consumers (Shemittah #10 - Avodas Karka D)
Rabbi Dovid Cohen
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 But the book at www.
- Cleaning Chalif Between Shechitos (Meat and Poultry 9 - Chalif B)
Rabbi Dovid Cohen
Cleaning chalif between shechitos - Checking the chalif - Chalif previously used for teraifah - Sterilization of the chalif Video available at https://kshr.us/CleanChalif
- Mei Raglayim (urine) (Animal Products #3 - Shulchan Aruch 81:1)
Rabbi Dovid Cohen
Mei Raglayim (urine) Coffee from elephant dung Premarin
- Halachic Issues of Heter Mechirah [Part 2] (Shemittah #19 - Heter Mechirah C)
Rabbi Dovid Cohen
Inherent Halachic Issues Part 2 - Lo Sechanem Shelichus is required Lo sechanem to sell land Sheliach lid'var aveirah Invalidates the shelichus Buy the book at www.kashrushalacha.com
- Materials [Part 1] (Tevillas Keilim #1 Shulchan Aruch 120:1a)
Rabbi Dovid Cohen
Materials (Part 1) - Gemara - Metal - Glass Buy the book at www.kashrushalacha.com .
- Minhag to Cook Three Eggs (Eggs #7 - 86:5-6b)
Rabbi Dovid Cohen
Minhag to Cook Three Eggs - Reason for the minhag - Egg laid on Yom Tov - Water in the egg pot
- Davar Hama'amid (part 2) [Alcoholic Beverages #15 - Shulchan Aruch 114:6]
Rabbi Dovid Cohen
Davar Hama'amid (part 2) Question from Mishnah; Pri Chadash; Chavos Da'as; Pnei Yehoshuah; Difference in nomenclature Buy the book at www.kashrushalacha.com
- Zei'ah, Hevel, and Reichah (Kashering #24 - Shulchan Aruch 451:14)
Rabbi Dovid Cohen
Zei'ah, hevel and reichah Hood or cover over oven or kettle
- Reason for the Issur (Kosher Dairy #2 - Shulchan Aruch 115:1)
Rabbi Dovid Cohen
Reason for the Issur Chalav akum Need for the takanah Taste of non-kosher milk
- Office Parties [Alcoholic Beverages #4 - Shulchan Aruch 114:1]
Rabbi Dovid Cohen
Office Parties Aivah Iggeros Moshe Rambam Buy the book at www.kashrushalacha.com
- Flavors (Hashgachah Practicum #43 - Ingredients F)
Rabbi Dovid Cohen
Flavors: Components (active vs. inactive, non-certified); Types (natural vs. artificial, liquid vs. powder); Ingredients. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Vertical Farming (Q&A 73)
Rabbi Dovid Cohen
Vertical Farming See seforim by Rabbi Cohen at www.kashrushalacha.com
- Animal Products (Hashgachah Practicum #59 - Ingredients J)
Rabbi Dovid Cohen
Animal Products: Yotzeh vs. Pirshah; Shellac and Carmine; Bee Products (honey, royal jelly, pollen, beeswax, propolis); Eggs; Yotzeh of a kosher animal; Colostrum; Lanolin. See seforim by Rabbi Cohen at www.kashrushalac