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
- Kashering From The Food Side (Hashgachah Practicum #10 - Kashering A)
Rabbi Dovid Cohen
Kashering From The Food Side Basic Halacha; Blech; Frying pan; Glass stovetop; Kedairah blech; Reactor. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Kavanah (Bishul Yisroel #23 - Shulchan Aruch 113:5)
Rabbi Dovid Cohen
Kavanah Boilers Buy the book at www.kashrushalacha.com
- Vinegar [Part 2] (Kosher Anthology 43)
Rabbi Dovid Cohen
Vinegar (Part 2): Charif; Stam yayin - bitul b'shishah, depth of absorption; Chametz; Kashering - odor, kli sheini, kovush; Other. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Chametz After Pesach (Hashgachah Practicum #56 - Pesach D)
Rabbi Dovid Cohen
Chametz After Pesach: Basic halachos; Which foods; Storekeepers; Manufacturers; Distributors. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Shrink Tunnel (Meat and Poultry #33 - Packaging A)
Rabbi Dovid Cohen
Does a shrink tunnel used for non-kosher meat have to be kashered before use for kosher meat in Cryovac bags? Hot tunnel Hot bath Layers Irui kli rishon, tata'ah gavar, hevel hakedairah Watch the video at http://kshr.us/ShrinkTunnel
- Citrus Scale (Halachos of Insects #9 - Shulchan Aruch 84:6)
Rabbi Dovid Cohen
Attached to the ground but didn't crawl Citrus Scale Buy the book at www.kashrushalacha.com
- Refrigerators and Ovens (Q&A 34)
Rabbi Dovid Cohen
Refrigerators and ovens: Opening the door on Shabbos and Yom Tov See seforim by Rabbi Cohen at www.kashrushalacha.com
- Techels From Non-Kosher Fish (Animal Products #2 - Shulchan Aruch 81:1)
Rabbi Dovid Cohen
Techeles from non-kosher fish
- Retinning (Tevillas Keilim #15 - Shulchan Aruch 120:10)
Rabbi Dovid Cohen
Retinning Uman Koneh B’shvach Kli Basic halacha Factory workers Buy the book at www.kashrushalacha.com
- Non-Jew Temporarily Owned Item (Tevillas Keilim #18 - Shulchan Aruch 120:11)
Rabbi Dovid Cohen
Non-Jew temporarily owned item (mechiras chametz) Utensil owned by a Jew and non-Jew (partnership) Prohibition to use utensil before tevillah Buy the book at www.kashrushalacha.com
- Lactose (Q&A 39)
Rabbi Dovid Cohen
Lactose See seforim by Rabbi Cohen at www.kashrushalacha.com
- Salek, Safek Chisaron Chochmah (Bitul and Blios #29 - Shulchan Aruch YD 98:2-3)
Rabbi Dovid Cohen
Salek es mino (סלק את מינו); Safek chisaron chochmah. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Grapes (Q&A 89)
Rabbi Dovid Cohen
Grapes See seforim by Rabbi Cohen at www.kashrushalacha.com
- Methods of Food Preparation [Part 3] (Bishul Yisroel #34 - Shulchan Aruch 113:13)
Rabbi Dovid Cohen
Methods of Food Preparation [Part 3] Microwave Induction cooktop Buy the book at www.kashrushalacha.com
- Gevinas Yisroel (Hashgachah Practicum #38 - Dairy D)
Rabbi Dovid Cohen
Gevinas Yisroel: Soft cheese; Creating gevinas Yisroel; Kashering. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Chiltis (Alcoholic Beverages #19 - 114:9-10a)
Rabbi Dovid Cohen
Chiltis - Koret shel chiltis - Aalin shel chiltis Buy the book at www.kashrushalacha.com
- Dishwasher (Q&A 48)
Rabbi Dovid Cohen
Dishwasher See seforim by Rabbi Cohen at www.kashrushalacha.com
- Mevushal [Part 3] (Alcoholic Beverages #30 - 123:3)
Rabbi Dovid Cohen
Mevushal (Part 3) - Pasteurization (four reasons – loss, taste, Rosh, not Chazal’s mevushal wine) Buy the book at www.kashrushalacha.com
- Shabbos Catering (Kosher Classes #10)
Rabbi Dovid Cohen
Shabbos Catering
- Pesach (Meat and Poultry #34 - Packaging B)
Rabbi Dovid Cohen
Pesach issues at a kosher packing house: Netting Ink Casings Watch the video at http://kshr.us/PesachMeat
- Tzitzis [Part 1] Garment Size (Kosher Anthology 64)
Rabbi Dovid Cohen
Tzitzis [Part 1] - Garment Size: Length; Width; Neck hole. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Tuna Fish Without Hashgachah Temidis (Alcoholic Beverages #20 - 114:10b)
Rabbi Dovid Cohen
Tuna Fish Without Hashgachah Temidis - Introduction -Chilek - Chilek shel uman - Uman lo mareh nafsheh - Kirvei dagim - Other fish - Kovush Buy the book at www.kashrushalacha.com
- Bread (Q&A 49)
Rabbi Dovid Cohen
Bread See seforim by Rabbi Cohen at www.kashrushalacha.com
- Shevisas Keilim (Kosher Anthology 39)
Rabbi Dovid Cohen
Shevisas Keilim (שביתת כלים): Timer; Starting melacha (watermill); Pizza oven for Motzai Shabbos; Fax machine; Time Zones; Vending machine. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Chalav Stam Nowadays (Q&A #57)
Rabbi Dovid Cohen
Chalav Stam Nowadays See seforim by Rabbi Cohen at www.kashrushalacha.com
- Butchering Knives (Meat and Poultry #38 - Miscellaneous C)
Rabbi Dovid Cohen
Is it acceptable for kosher slaughterhouses to use the same knives for kosher and non-kosher, such as neveilos and teraifos? How can that be reconciled with Shulchan Aruch YD 10:3 and 64:16? See the video at http://kshr.us/ButcherKnives
- Broccoli (Halachos of Insects #22 - Shulchan Aruch 84:9)
Rabbi Dovid Cohen
Broccoli History Removable Issur Hopelessly Lost How Hard to Find It Buy the book at www.kashrushalacha.com
- Choosing a Machine Matzah (Pesach #9)
Rabbi Dovid Cohen
Choosing a Machine Matzah
- Hydroponically Grown Vegetables (Pesach #26)
Rabbi Dovid Cohen
Hydroponically Grown Vegetables Insects Shemittah Berachos Marror
- Takalah (Halachos of Insects #8 - Shulchan Aruch 84:5)
Rabbi Dovid Cohen
Takalah Business with forbidden foods When some hold it is mutar Practical applications Buy the book at www.kashrushalacha.com
- Shechitos (Q&A 27)
Rabbi Dovid Cohen
Shechitos See seforim by Rabbi Cohen at www.kashrushalacha.com
- Play-Doh on Pesach [Part 1] (Pesach #18)
Rabbi Dovid Cohen
Play-doh on Pesach (Part 1) Nifsal mei'achilah Chavas Da'as
- Asui Lehishtamesh B'shefah (Bitul and Blios #34 - Shulchan Aruch YD 99:7)
Rabbi Dovid Cohen
Asui Lehishtamesh B'shefah (עשוי להשתמש בשפע): Rashba; Logic; First source; Pegam and Aino ben yomo; Second source; Halacha; Questions. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Human Byproducts [Part 1] (Animal Products #12 - Shulchan Aruch 81:7)
Rabbi Dovid Cohen
Human Byproducts (Part 1) Flesh
- Yoshon - You Can Do It (Kosher Classes #48)
Rabbi Dovid Cohen
Yoshon – You Can Do It
- Yotzeh From a Kosher Animal (halacha) (Animal Products #8 - Shulchan Aruch 81:5)
Rabbi Dovid Cohen
Yotzeh from a Kosher Animal (Halacha) Meimei chalav Machlokes Proofs and explanation Poskim
- Hachanah in a Pesach Hotel (Pesach #13)
Rabbi Dovid Cohen
Hachana in a Pesach Hotel Waiting Marbeh B'Shiurim Incomplete Hachanah Non-Jew Performing Hachanah
- Limiting Reach of a Hafrashah (Hafrashas Challah #11 - Shulchan Aruch 324:11)
Rabbi Dovid Cohen
Limiting Reach of a Hafrashah, Hafrashah from Matzah on Dough
- Food is Oleh as a Tafel (Bishul Yisroel #21 - Shulchan Aruch 113:2)
Rabbi Dovid Cohen
Food is oleh as a tafel Stam Keilim Buy the book at www.kashrushalacha.com
- Karpas Vegetable Choice (Pesach #15)
Rabbi Dovid Cohen
Karpas vegetable choice Introduction Vegetables to Avoid Karpas/Celery Other Preferences
- Dietary Needs At The Seder (Pesach #44)
Rabbi Dovid Cohen
Dietary Needs at the Seder: Shiurim; Four Cups / Daled Kosos; Matzah; Marror; Charoses; Karpas; Shulchan Oreich. See Rabbi Cohen's seforim at www.kashrushalacha.com
- Shelichus for Companies (Hafrashas Challah #21 - Shulchan Aruch 328:3)
Rabbi Dovid Cohen
Shelichus for Companies (challah and mechiras chametz): Authorization Non-Jewish Company Mumar Manager Sheliach Oseh Sheliach
- Late Participation In The Baking (Pas Yisroel #13 - Shulchan Aruch 112:12)
Rabbi Dovid Cohen
Late participation in the baking Karmu P'nei Hapas After ma'achal ben drusai Is chitui helpful Buy the book at www.kashrushalacha.com
- Marijuana and Nicotine (Kosher Anthology 6)
Rabbi Dovid Cohen
Marijuana and Nicotine: Health and safety; Cigarettes and cigars; Hookah and vaping; Smokeless tobacco; Zyn (nicotine pouches); Marijuana (growing and processing); Hemp and CBD; D8; Pesach. See seforim by Rabbi Cohen at
- Milk and Meat (Hashgachah Practicum #42 - Consumer F)
Rabbi Dovid Cohen
Milk and Meat: Foods (dairy bread, imitation items); Food preparation (separations, oil and spices, double oven, microwave, stovetop); Kashering back and forth; Waiting 6 hours (meat pot, hard cheese); Non-food use (hana'ah); Pet food. See
- Layered or Coated Utensils (Tevillas Keilim #8 - Shulchan Aruch 120:6-7a)
Rabbi Dovid Cohen
Layered or Coated Utensils Basic halachos Ma'amid Disposable spice grinders Buy the book at www.kashrushalacha.com
- Seals [Part 2] (Kosher Anthology 31)
Rabbi Dovid Cohen
Seals [Part 2]: Yotzeh v'nichnas; Home setting; Factories; Uber Eats; Equipment. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Insect Issues (Kosher Classes #49)
Rabbi Dovid Cohen
Insect Issues Copepods in New York City Water (Kensico reservoir, visibility, matzui) Worms in fish Leaf miners Mechanically dried herbs Shellac Q&A Buy the book at www.kashrushalacha.com
- Quality Chalafim (Meat and Poultry 8 - Chalif A)
Rabbi Dovid Cohen
Quality Chalafim - Chad v’chalak - Chalafim melutashim - Modern chalafim Video available at https://kshr.us/Chalif
- Soap [Alcoholic Beverages #10 - Shulchan Aruch 114:4]
Rabbi Dovid Cohen
Soap Saponification Sicha k'eshtiyah Detergent Certification Buy the book at www.kashrushalacha.com
- Turkey, White Leghorn Chicken, Zebu (Kosher Classes #3)
Rabbi Dovid Cohen
Turkey White Leghorn Chicken Zebu
- Pineapple (Kosher Anthology 10)
Rabbi Dovid Cohen
Pineapple [Arlah Shorts - Part 2]: Growth; Status; See seforim by Rabbi Cohen at www.kashrushalacha.com
- Instant Coffee (Q&A 32)
Rabbi Dovid Cohen
Instant Coffee See seforim by Rabbi Cohen at www.kashrushalacha.com
- Transportation (Q&A 17)
Rabbi Dovid Cohen
Transportation See seforim by Rabbi Cohen at www.kashrushalacha.com
- Tevillas Keilim [Part 2] (Hashgachah Practicum #12 - Consumer B)
Rabbi Dovid Cohen
Tevillas Keilim - Part 2 (business users) Containers of Packaged Food; Restaurants; Hotels; Nursing Homes; Retinning; Large industrial equipment; See seforim by Rabbi Cohen at www.kashrushalacha.com
- Pas Yisroel (Q&A 33)
Rabbi Dovid Cohen
Pas Yisroel See seforim by Rabbi Cohen at www.kashrushalacha.com
- Kashering at 190 F (Kashering #6 - Shulchan Aruch 451:3)
Rabbi Dovid Cohen
Kashering at 190 F
- Retorts (Hashgachah Practicum #36 - Equipment F)
Rabbi Dovid Cohen
Retorts: Technology; Batch retorts; Continuous Retors; FMC Cooker; Hydrostatic Cooker (operations, temperatures, kashering); Bishul Yisroel. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Chalav Yisroel (Q&A 26)
Rabbi Dovid Cohen
Chalav Yisroel See seforim by Rabbi Cohen at www.kashrushalacha.com
- Rust, Polymerized Oil (Kashering #7 - Shulchan Aruch 451:3)
Rabbi Dovid Cohen
Rust Polymerized oil