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
- Rotzeh B'kiyumo (Pesach #30)
Rabbi Dovid Cohen
Rotzeh B'kiyumo
- Pesach Q&A 5781 (Pesach #40)
Rabbi Dovid Cohen
Medicine Soft matzah Bake your own matzah CBD / marijuana Antacids Kashering with a steamer Toothpaste, mouthwash, & lipstick
- Yad Soledes Bo (Bitul and Blios #50 - Shulchan Aruch YD 105:2)
Rabbi Dovid Cohen
Yad Soledes Bo: Heat vs. Temperature; Shiurim from Poskim - low end, high end. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Broccoli Kugel (Halachos of Insects #32 - Shulchan Aruch 84:14)
Rabbi Dovid Cohen
Broccoli Kugel Buy the book at www.kashrushalacha.com
- Raspberries & Blackberries (Halachos of Insects #21 - Shulchan Aruch 84:9)
Rabbi Dovid Cohen
Raspberries & Blackberries Frozen vs. fresh Finding insects Chiyuv bedikah on frozen berries Buy the book at www.kashrushalacha.com
- Spray Dryers (Kashering #10 - Shulchan Aruch 451:4)
Rabbi Dovid Cohen
Spray Dryers
- Kilayim [Part 2] (Kosher Anthology 27)
Rabbi Dovid Cohen
Kilayim [Part 2]: Keeping a kilayim tree; Bracha on blossoming tree; Shehechiyanu on Rosh Hashanah; Microbial fermentation. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Urns (Q&A #7)
Rabbi Dovid Cohen
Urns. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Warming Food on Shabbos (Kosher Anthology 7)
Rabbi Dovid Cohen
Warming Food on Shabbos: Hot box; Hot plate (plata); Empty pan; Non-Jews; Shabbos Chef. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Milk Powder and Acid Casein (Kosher Dairy #20 - Shulchan Aruch 115:3)
Rabbi Dovid Cohen
Milk Powder & Acid Casein
- Bitul Issur L'chatchilah (Bitul and Blios #33 - Shulchan Aruch YD 99:5-6)
Rabbi Dovid Cohen
Bitul Issur L'chatchilah Which foods - heter, rennet, maris ayin, safek, ingredient; Non-food issues - puree, pegimah, remove issur, aino ben yomo; Which people - manufacturer, hashgachah, choice, machmir; Ain kavonoso levatel - classic, k'
- Seriousness of Bishul Akum (Kosher Classes #44)
Rabbi Dovid Cohen
Seriousness of Bishul Akum
- Methods of Food Preparation [Part 1] (Bishul Yisroel #32 - Shulchan Aruch 113:13)
Rabbi Dovid Cohen
Methods of Food Preparation [Part 1] Brining Pickling Smoking Buy the book at www.kashrushalacha.com
- Edible Raw (Kosher Anthology 23)
Rabbi Dovid Cohen
Edible Raw (Bishul Akum) : Milk; Corn; Cranberries; Maple Syrup; Mushrooms; Chestnuts; Fish (sushi). See seforim by Rabbi Cohen at www.kashrushalacha.com
- Whisky (Kosher Classes #1)
Rabbi Dovid Cohen
Whiskey
- High School Q&A 2025 (Kosher Classes 71)
Rabbi Dovid Cohen
High School Q&A 2025: Vaping; Dairy and DE; Drinks; Hechsherim. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Foods That Require Bishul Yisroel (Hashgachah Practicum #6 - Bishul Yisroel A)
Rabbi Dovid Cohen
Foods That Require Bishul Yisroel Pas vs. Tavshil; Edible raw (נאכל חי) (with other foods, passably edible, prefer it cooked); Oleh al shulchan melachim (עולה על שולחן מלכים) (definition, if prepared differently, egg) Beets, cake, cereal, c
- Surgical Procedures (Meat and Poultry 3 - Livestock C)
Rabbi Dovid Cohen
Surgical Procedures - Drawing blood - Capon chicken - Cannulated cow - Ruminal tympany (bloat) - Displaced abomasum Video at https://kshr.us/Surgical
- Shiur of Ma'achal Ben Drusai (Bishul Yisroel #27 - Shulchan Aruch 113:8)
Rabbi Dovid Cohen
Shiur of Ma'achal Ben Drusai Non-Jew Removed Food From Fire Buy the book at www.kashrushalacha.com
- Port Wine (Alcoholic Beverages #32 - 123:5)
Rabbi Dovid Cohen
Port Wine Buy the book at www.kashrushalacha.com
- Grape Juice at the Seder [Part 2] (Pesach #8)
Rabbi Dovid Cohen
Grape Juice at the Seder [Part 2]
- Shiur Challah (Hafrashas Challah #6 - Shulchan Aruch 324:1)
Rabbi Dovid Cohen
Shiur Challah Tzlach's question Size of Eggs & Etzbo'os Practical Halacha and Shiurim
- Even M'lubenes (Kashering #26 - Shulchan Aruch 451:16)
Rabbi Dovid Cohen
Even m'lubenes
- Five Grains [Part 2] (Kosher Anthology 21)
Rabbi Dovid Cohen
Five Grains - Part 2): Ma'asei Kedairah; Bran removed; Stuck together (Rambam, Rabbeinu Yonah); Pearled barley; Farro; Granola Bars. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Davar Sheyesh Lo Matirim (Kosher Classes #36)
Rabbi Dovid Cohen
Davar sheyesh lo matirim Yoshon (malt, milling) Shemittah Chazusah Insects (broccoli, orange juice) Tevillas keilim Chametz
- Chips (Q&A 75)
Rabbi Dovid Cohen
Chips See seforim by Rabbi Cohen at www.kashrushalacha.com
- Kashering (Q&A 95)
Rabbi Dovid Cohen
Kashering See seforim by Rabbi Cohen at www.kashrushalacha.com
- Liquid Eggs (Eggs #10 - 86:10)
Rabbi Dovid Cohen
Liquid Egg - Gemara - Nowadays - Liquid eggs
- Color (Q&A 38)
Rabbi Dovid Cohen
Color See seforim by Rabbi Cohen at www.kashrushalacha.com
- Kashering Shorts [Part 1] (Kosher Anthology 18)
Rabbi Dovid Cohen
Kashering Shorts: Corelle (absorption, tevillah); Milui v'irui on Shabbos; Chafing dish food pans; Countertops. See seforim by Rabbi Cohen at www.kashrushalacha.com
- B'lios of Pas Akum (Pas Yisroel #15 - Shulchan Aruch 112:15)
Rabbi Dovid Cohen
B'lios of Pas Akum Buy the book at www.kashrushalacha.com
- Safek Issur Mashehu (Pesach #42)
Rabbi Dovid Cohen
Safek Issur Mashehu; Rice Cereal for infants on Pesach; איסור משהו; נתקבעו; יבש ביבש; סכין; ירדו גשמים See Rabbi Cohen's seforim at www.kashrushalacha.com
- Introduction to Nikkur (Meat and Poultry #19 - Nikkur A)
Rabbi Dovid Cohen
Introduction to Nikkur Four reasons to perform nikkur Nikkur achorayim (hindquarters) Contemporary nikkur (10 parts) 5739 incident Bonus content - Rav Belsky shows the gid hanasheh Video available at https://kshr.us/NikkurIntro
- Kilayim [Part 1] (Kosher Anthology 26)
Rabbi Dovid Cohen
Kilayim: Basics; Species/Minim; Shehechiyanu; Grafting vs Crossbreeding. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Hotel Kashering (Hashgachah Practicum #40 - Kashering C)
Rabbi Dovid Cohen
Hotel Kashering: Safety; Flat top (griddle); Tilt skillet (brazier); Steam kettle; Vegetable steamer; Hot box. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Ribs (Meat and Poultry #21 - Nikkur C)
Rabbi Dovid Cohen
Ribs: Differences between Eretz Yisroel and United States Chutei D'kafli (חוטי דכפלי) Intercostal nerves on 11th, 12th, 13th ribs Rib eye Nodah B'yehudah / Chasam Sofer Fat around rib eye, teraifah finger, along bone, 12th vertebrae Video o
- 10 Animals [Part 5] (Kosher Anthology 35)
Rabbi Dovid Cohen
10 Animals [Part 5]: Identifying Chayos; Domestication; Wild beheimos; Horn types; Halachic differences. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Play-Doh on Pesach [Part 2] (Pesach #19)
Rabbi Dovid Cohen
Play-doh on Pesach (part 2) Nuksheh Yichdo l'yeshiva
- High School Kosher Q&A [Part 1] (Kosher Classes #60)
Rabbi Dovid Cohen
High School Q&A [Part 1]: Meat and milk; Saltshaker; D and DE; Hard cheese; Pareve in a meat pot; Dairy spoon in meat drawer; Shechitos; Beverages See seforim by Rabbi Cohen at www.kashrushalacha.com
- Flour From Different Years [Part 2] (Hafrashas Challah #10 - Shulchan Aruch 324:8)
Rabbi Dovid Cohen
Flour from Different Years (Part 2) Blended flour
- Higdil Haissur Midaso (Bitul and Blios #43 - Shulchan Aruch YD 103:2)
Rabbi Dovid Cohen
Higdil Ha'Issur Midaso (הגדיל האיסור מדתו) : Nutramigen (whose taste, kashering); Carmine Manufacturer (b'lios, inedible). See seforim by Rabbi Cohen at www.kashrushalacha.com
- Cooking in a Jew's House (Bishul Yisroel #22 - Shulchan Aruch 113:4)
Rabbi Dovid Cohen
Cooking in a Jew's house Pre-Shulchan Aruch Shulchan Aruch and afterwards Buy the book at www.kashrushalacha.com
- Atzis She'aino Nakuv (Halachos of Insects #10 - Shulchan Aruch 84:6)
Rabbi Dovid Cohen
Atzis she'aino nakuv Mushrooms Modern mushroom growing methods Hydroponically grown vegetables Safek issur Leaf miners Buy the book at www.kashrushalacha.com
- Davar Hama'amid (part 1) [Alcoholic Beverages #14 - Shulchan Aruch 114:6]
Rabbi Dovid Cohen
Davar Hama'amid (part 1) Four early sources; Exceptions; Examples Buy the book at www.kashrushalacha.com
- Kashering With Libun [Part 1] (Pesach #20)
Rabbi Dovid Cohen
Kashering with libun (part 1) Temperature
- Pas Bal HaBayis (Pas Yisroel #8 - Shulchan Aruch 112:8)
Rabbi Dovid Cohen
Pas Bal HaBayis Bishul Paltar Maharit Tzahalon Rav Moshe's Opinion Buy the book at www.kashrushalacha.com
- Glatt and Beis Yosef (Meat and Poultry 16 - Teraifos C)
Rabbi Dovid Cohen
Glatt and Beis Yosef Source Five methods of checking Primary standards Glatt Beis Yosef/Chalak Sephardim Non-glatt meat Video available at https://kshr.us/Glatt
- Other Elements of Kedushas Shevi'is (Shemittah #13 - Shemittah Produce B)
Rabbi Dovid Cohen
Other Elements of Kedushas Shevi'is - Keep in Eretz Yisroel - Sechorah - Biur Buy the book at www.kashrushalacha.com
- Vegetable oil from an animal/vegetable factory (Alcoholic Beverages #17 - 114:7)
Rabbi Dovid Cohen
Vegetable oil from an animal/vegetable factory - Two cases (A/V plant, transported overseas in ship hold) - Five Gemaros/Four Opinion - Shach - Deodorized Oil Buy the book at www.kashrushalacha.com
- Burning the Challah (Hafrashas Challah #3 - Shulchan Aruch 322:4-5)
Rabbi Dovid Cohen
Kezayis for hafrashah Burning the challah Separation and burning in the tevel-dough system
- Tevillas Keilim – Rules and Examples (Kosher Classes #41)
Rabbi Dovid Cohen
Tevillas Keilim – Rules and Examples
- Citrus Scale (Q&A #56)
Rabbi Dovid Cohen
Citrus Scale See seforim by Rabbi Cohen at www.kashrushalacha.com
- ChaNaN [Part 1 - Basic Halacha] (Bitul and Blios #4 - Shulchan Aruch YD 92:3-4)
Rabbi Dovid Cohen
Chatichah Na'aseis Neveilah (חנ"נ) [Part 1] Basic Halacha Basar b'chalav; Sha'ar issurim; Hefsed merubah (examples); Lach and yavesh (לח ביבש, לח בלח, יבש ביבש, powdered stabilizer blend); Safek issur (five opinions); Steam systems; Yedias
- Using Milk Which is not Chalav Yisroel (Kosher Dairy #4 - Shulchan Aruch 115:1)
Rabbi Dovid Cohen
Ne'emanus of a child Using milk which is not Chalav Yisroel Pri Chadash/Chasam Sofer Proofs No non-kosher animals in the city
- Food Contact (Klei Seudah - Part 1) (Tevillas Keilim #5 - Shulchan Aruch 120:4)
Rabbi Dovid Cohen
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 Buy the book at www.kashrushalach
- Kashrus Rulings From Rav Belsky (Kosher Classes #58)
Rabbi Dovid Cohen
Kashrus Rulings from Rav Belsky; Irreligious Jews and pas Yisroel; Miut hamatzui; Tevillas keilim for certified restaurants; Shemittah positions; Raisin juice; Maintaining tevel status; Checking for tzomas hagidin; Hindquarter nikkur; Farbe
- Creating Gevinas Yisroel [Part 1] (Kosher Dairy #15 - Shulchan Aruch 115:2)
Rabbi Dovid Cohen
Creating Gevinas Yisroel (Part 1) Rema and Shach Understanding the takanah
- Shabbos and Yom Tov (Tevillas Keilim #23 - Shulchan Aruch 120:16)
Rabbi Dovid Cohen
Shabbos and Yom Tov Tevillas keilim on Shabbos Give a present Muktzeh Buy the book at www.kashrushalacha.com
- High School Kosher Q&A [Part 3] (Kosher Classes #62)
Rabbi Dovid Cohen
High School Kosher Q&A - Part 3 - Chumros: Yoshon - why, trusting people; Chalav Yisroel - why, powdered milk; Pas yisroel; Bird breeds. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Raisin Juice Concentrate (Alcoholic Beverages #35 - 123:11)
Rabbi Dovid Cohen
Raisin juice concentrate - Introduction - Raisin blows - Hamshachah - Time of bishul Buy the book at www.kashrushalacha.com