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
- Whisky [Part 2] (Kosher Classes #8)
Rabbi Dovid Cohen
Whiskey - Part 2
- Which Foods Might Be Chametz [Part 1 - Examples] (Pesach #10)
Rabbi Dovid Cohen
Which Foods Might Be Chametz Part 1-Examples - Basic chametz - Malt uses - Ethyl alcohol - Glucose uses - Other
- Surface Propagations [Part 1] (Bitul and Blios #55 - Shulchan Aruch YD 106:1)
Rabbi Dovid Cohen
Surface Propagations [Part 1 - Inherent status] Gidulim; Yotzeh; Nispatmah kol yamehah. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Mixtures of Different Foods (Bishul Yisroel #20 - Shulchan Aruch 113:2-3)
Rabbi Dovid Cohen
Mixtures of different foods Soup and Salad Beer Buy the book at www.kashrushalacha.com
- Halachic Issues of Heter Mechirah [Part 1] (Shemittah #18 - Heter Mechirah B)
Rabbi Dovid Cohen
Inherent Halachic Issues Part 1 - Tabu - Ha'aramah/Gemiras Da'as (ha'aramah be'd'rabannan, mechiras chametz, Devarim shebilev) But the book at www.kashrushalacha.com
- Vinegar [Part 1] (Hashgachah Practicum #14 - Equipment C)
Rabbi Dovid Cohen
Vinegar - Part 1 of 2; Acetobacter; Vinegar types; Ingredients; Production; Generator; Acetator; Concentration. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Basis for Commercial Hashgachah (Bishul Yisroel #30 - Shulchan Aruch 113:10-11)
Rabbi Dovid Cohen
Basis for Commercial Hashgachah Safek Bishul Akum References to Earlier Discussions Buy the book at www.kashrushalacha.com
- Bitul (Q&A 86)
Rabbi Dovid Cohen
Bitul See seforim by Rabbi Cohen at www.kashrushalacha.com
- Yotzeh From a Kosher Animal (applications) (Animal Products #9 - Shulchan Aruch 81:5)
Rabbi Dovid Cohen
Yotzeh From a Kosher Animal (Applications) Colostrum Lanolin
- Hard Apple Cider [Alcoholic Beverages #7 - Shulchan Aruch 114-3-4]
Rabbi Dovid Cohen
Hard Apple Cider Apple Juice without hashgachah Substitution for benefit Buy the book at www.kashrushalacha.com
- Identifying Weak Hashgachos [Part 1] (Halachos of Insects #27 - Shulchan Aruch 84:11)
Rabbi Dovid Cohen
Identifying weak hashgachos (part 1) Everyone has ne'emanus Is he nogeah? Source of the information Lemeichash mebaii Buy the book at www.kashrushalacha.com
- Give Utensils to a Non-Jew (Tevillas Keilim #24 - Shulchan Aruch 120:16)
Rabbi Dovid Cohen
Give utensil to a non-Jew Temporary or permanent solution Give part to a non-Jew Hefker Buy the book at www.kashrushalacha.com
- Knife Sharpening (Q&A 64)
Rabbi Dovid Cohen
Knife Sharpening See seforim by Rabbi Cohen at www.kashrushalacha.com
- Oil (Hashgachah Practicum #23 - Ingredients D)
Rabbi Dovid Cohen
Oil: Source; Fish; Kitnios; Processing (deodorizing, bulk transport, conversion, tracing lines); Lubricants; Essential Oils; Citrus Oil; See seforim by Rabbi Cohen at www.kashrushalacha.com
- Glucose (Hashgachah Practicum #1 - Ingredients A)
Rabbi Dovid Cohen
Glucose Sugars (monosaccharides, disaccharides, polysaccharides) Glucose sources (juice, lactose, starch, countries of origin) Glucose uses (fermentations, alcohol, vinegar, ethyl compounds, sugar alcohols) Nishtaneh See seforim by Rabbi Co
- Chalav Yisroel (Kosher Classes #11)
Rabbi Dovid Cohen
Chalav Yisroel
- Coatings (Bitul and Blios #47 - Shulchan Aruch YD 103:5)
Rabbi Dovid Cohen
Coatings: Pot and pans (residue, always aino ben yomo, asui l'hishtamesh b'shefah, ain kavonoso levatel); Pre-seasoned cast iron pans; Styrofoam cups; Fruits and vegetables. See seforim by Rabbi Cohen at www.kashrushalacha.co
- Five Grains [Part 3] (Kosher Anthology 22)
Rabbi Dovid Cohen
Five Grains (Part 3): Bracha Acharonah; Kol Sheyesh Bo (licorice, shnitzel, fish sticks); Bran; Vital Wheat Gluten (seitan); Wheat Starch (Molino flour); See seforim by Rabbi Cohen at www.kashrushalacha.com
- Kitnios (Hashgachah Practicum #53 - Pesach B)
Rabbi Dovid Cohen
Kitnios: Which foods; Halachos; Derivatives; Other minhagim. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Denatured Alcohol Update (Pesach #32)
Rabbi Dovid Cohen
Denatured Alcohol Update Description Rejected positions Edible in the denatured form Removability of the denaturant Edibility reconsidered Source of the alcohol
- Tziruf Sal - Practical Applications (Hafrashas Challah #13 - Shulchan Aruch 325:1)
Rabbi Dovid Cohen
Tziruf Sal (practical applications) Accepting of mixture Packaging and multiple packages Large container and refrigerators
- Definition of Pirash (Halachos of Insects #6 - Shulchan Aruch 84:4)
Rabbi Dovid Cohen
Definition of Pirash Sfekos of the Gemara Im timzah lomar Pirash meis Teiku b'drabannan Buy the book at www.kashrushalacha.com
- Viability of Otzar Beis Din (Shemittah #20 - Otzar Beis Din A)
Rabbi Dovid Cohen
Viability - Source and logic - Practical implementation Buy the book at www.kashrushalacha.com .
- Adding Water to an Electric Urn on Yom Tov (Kosher Classes #35)
Rabbi Dovid Cohen
Adding water to an electric urn on Yom Tov Introduction Urns and Pump Pots Basic operations One coil vs. two coils Grama
- Distillation Columns (Kashering #42 - Shulchan Aruch 452:3-4)
Rabbi Dovid Cohen
Distillation Columns
- Techum (Kosher Anthology 57)
Rabbi Dovid Cohen
Techum: 4 Amos; Surrounded by walls; City; Squaring of the city; 2,000 Amos; Possessions. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Coffee and Tea (Kosher Classes #28)
Rabbi Dovid Cohen
Coffee and Tea Coffee - inherent concerns, office settings, Keurig machines Tea - inherent concerns, Shabbos, Teavana stores Joulies
- Bitul B'shishah (part 1) [Alcoholic Beverages #8 - Shulchan Aruch 114:4]
Rabbi Dovid Cohen
Bitul b'shishah (part 1) Bitul b'shishah Which liquids Buy the book at www.kashrushalacha.com
- Pesach Information for Rabbis (Pesach #25)
Rabbi Dovid Cohen
Pesach Information for Rabbis Principles Non-Foods Foods
- Creating Gevinas Yisroel [Part 3] (Kosher Dairy #17 - Shulchan Aruch 115:2)
Rabbi Dovid Cohen
Creating Gevinas Yisroel (Part 3): Details of Shach's opinion Ownership Computerized addition of rennet Must you see cheese-making Who do we pasken like
- Davar Shebiminyan (Bitul and Blios #60 - Shulchan Aruch YD 110:1)
Rabbi Dovid Cohen
Davar Shebiminyan: What qualifies; Meat; Sefer Torah. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Keilim Which Touch (Kashering #41 - Shulchan Aruch 451:3-4)
Rabbi Dovid Cohen
Keilim which touch
- Amirah L'akum (Kosher Anthology 11)
Rabbi Dovid Cohen
Amirah L'akum: Melacha - machlokes, psik reishah, urn; For Jews - wash dishes, adatah d'nafshey, Jew's home, write orders, convection oven, industrial, eruv; Shabbos or Yom Tov - Early Shabbos, bein hashmashos, open on Shabbos. See seforim
- Davar Hama'amid (Bitul and B'lios #1 - Shulchan Aruch YD 87:11)
Rabbi Dovid Cohen
Davar Hama’amid: General Halachos – Exceptions [1] basar b’chalav (cheese), [2] inherently forbidden (yeast), [3] zeh v’zeh gorem, [4] remains in (immobilized enzyme, glucose isomerase, catalysts), [5] meaningful effect Examples – cottage c
- Fish (Hashgachah Practicum #34 - Consumer D)
Rabbi Dovid Cohen
Fish: Inherent status; Processed fish (raw fish, cooking equipment); Bishul Yisroel (salting, smoking, tuna, sushi); Fish and meat. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Hafrashas Challah in Commercial Establishments (Kosher Classes #50)
Rabbi Dovid Cohen
Hafrashas Challah in Commercial Establishments Four methods Dough-ball method (shiyarehah nikarim, trust) Tevel dough and matzah (proper year, lo ba'ah l'olam, other grains, mukaf, shelichus, act of hafrashah) Q&A Buy Rabbi Cohen's book on
- Wine (Q&A 52)
Rabbi Dovid Cohen
Wine See seforim by Rabbi Cohen at www.kashrushalacha.com
- Sukkah Building (Kosher Classes #56)
Rabbi Dovid Cohen
Sukkah Building: Location; Walls; S'chach. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Borei Pri Hagafen (Kosher Anthology 60)
Rabbi Dovid Cohen
Borei Pri Hagafen: Adding water to water or grape juice (202 vs 204, Olas Tamid vs Pri Megadim, Applications); Changed juice (vinegar, brandy, ices); Currants. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Belgian Endives for Marror (Pesach #1)
Rabbi Dovid Cohen
Belgian Endives for Marror
- Kashrus in the KINS Kitchen (Kosher Classes #25)
Rabbi Dovid Cohen
Kashrus in the KINS Kitchen
- Milk Nowadays [Part 1] (Animal Products #5 - Shulchan Aruch 81:2)
Rabbi Dovid Cohen
Milk Nowadays (Part 1) Rov behaimos ainun teraifos
- Introduction to Kedushas Shevi'is (Shemittah #12 - Shemittah Produce A)
Rabbi Dovid Cohen
Introduction to Kedushas Shevi’is - Overview - Mitzvah to eat? - Gramah - Leftovers and Shemittah bins - Feeding children Buy the book at www.kashrushalacha.com
- Timtum Halev [Part 1] (Animal Products #15 - Shulchan Aruch 81:7)
Rabbi Dovid Cohen
Timtum Halev [Part 1] Mother's Milk Chalav Nachris Sakanah vs. timtum Perform the forbidden act Time-bound issurim
- Bee Products (Animal Products #17 - Shulchan Aruch 81:8-9)
Rabbi Dovid Cohen
Bee Products Shulchan Aruch 84:13 Honey Retail honey Royal jelly Beeswax Pollen Bee bread Bee propolis Other bee products
- Disposable Pans, Electrical Devices (Q&A 15)
Rabbi Dovid Cohen
Disposable Pans; Electrical Devices; Tevillas Keilim. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Produce of Eretz Yisroel (Kosher Classes #33)
Rabbi Dovid Cohen
Produce from Eretz Yisroel Shemittah Arlah Terumos & ma’asros
- Double Drawer Dishwasher (Bitul and Blios #17 - Shulchan Aruch 95:3-4)
Rabbi Dovid Cohen
Double Drawer Dishwasher; Part 4 of 5 on washing dishes; Nat bar nat; Dairy and meat simultaneously; Hot or cold. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Vermouth (Alcoholic Beverages #31 - 123:4)
Rabbi Dovid Cohen
Vermouth - Gemara - Reasons - Limitations - Poison/Potion Buy the book at www.kashrushalacha.com
- Introduction to Shulchan Aruch 123 (Alcoholic Beverages #24 - 123:1)
Rabbi Dovid Cohen
Introduction to Shulchan Aruch 123 - Why did Chazal forbid stam yayin Buy the book at www.kashrushalacha.com
- Hamshachah [Part 1] (Alcoholic Beverages #38 - 123:17-18)
Rabbi Dovid Cohen
Hamshachah (Part 1) - Wine press - Defining hamshachah - Hamshachah by mistake Buy the book at www.kashrushalacha.com
- Matzah Kefulah and Nefuchah (Pesach #5)
Rabbi Dovid Cohen
Matzah Kefulah and Nefuchah
- Kosher Bird Breeds-Part 2 [Eggs #2 - 86 1-2b]
Rabbi Dovid Cohen
Kosher Bird Breeds (Part 2) - Chicken - Turkey - Ducks and Geese - Robins
- Jewish Ownership (Q&A 80)
Rabbi Dovid Cohen
Jewish Ownership See seforim by Rabbi Cohen at www.kashrushalacha.com
- Aino Miskaven (Halachos of Insects #3 - Shulchan Aruch 84:3)
Rabbi Dovid Cohen
Aino miskaven Buy the book at www.kashrushalacha.com
- Is the Issur on the Land or the Person (Shemittah #9 - Avodas Karka C)
Rabbi Dovid Cohen
Issur on Land or Person? Hefker Meshumar & Ne’evad uy the book at www.kashrushalacha.com
- Israeli Produce (Q&A 47)
Rabbi Dovid Cohen
Israeli Produce See seforim by Rabbi Cohen at www.kashrushalacha.com
- Microwave and Dishwasher (Hashgachah Practicum #18 - Kashering B)
Rabbi Dovid Cohen
Microwave and Dishwasher Kashering: Cracks and crevices; Microwave oven; Home dishwasher (how it works, kashering); Double drawer dishwasher; Commercial dishwasher (box, conveyor). See seforim by Rabbi Cohen at www.kashrushalacha.com
- Rov Tashmisho (Kashering #13 - Shulchan Aruch 451:6)
Rabbi Dovid Cohen
Rov tashmisho
- Mukaf (Hafrashas Challah #14 - Shulchan Aruch 325:2)
Rabbi Dovid Cohen
Mukaf Gr"a's three categories Proofs and details Shulchan Aruch and Shach In the tevel hafrashah system