Kashrus Halacha

Meat and Fish Danger Separation Bitul (bitul b'shishim, bitul issur l'chatchilah) Worcestershire sauce Fish oil Marshmallows Fish fork B'lios See seforim by Rabbi Cohen at www.kashrushalacha.com

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

Tevillas Keilim - Part 1 (home users) China; Teflon; Porcelain enamel Disposable pans Electrical devices (עשוי לשמש עם הקרקע, impossible to toveil); Containers of packaged food See seforim by Rabbi Cohen at www.kashrushalacha.com

Nat Bar Nat Eight Basic Halachos (heter, charif, l'chatchilah, 3 transfers, cooking, clean utensil, aino ben yomo, residue); Certified items; "DE" foods; Keurig Steam table. See seforim by Rabbi Cohen at www.kashrushalacha.com

Kashering From The Food Side Basic Halacha; Blech; Frying pan; Glass stovetop; Kedairah blech; Reactor. See seforim by Rabbi Cohen at www.kashrushalacha.com

Ta'am Travelling and Transferring Cham miktzaso cham kulo (source, contradiction, Magen Avraham, Shach, Maharam Matz); Kovush; Distance; Connections; Speed. See seforim by Rabbi Cohen at www.kashrushalacha.com

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; Arlah; Terumah and ma'aser; Shemittah; Keilim (equipment) - fatty acids, vegetable oil, dryers, pasteurization, steam. See seforim by Rabbi Cohen at www.kashrusha...

Non-Kosher Materials - Part 1 Scope; Meat and Poultry; Oils, fats, glycerin, fatty acids, gelatin; Fish (scales, red roe, salmon, isinglass); Insects; Dairy products (chalav akum, gevinas akum, casein, lactose). See seforim by Rabbi Cohen at www.kashrushalacha.com

אין הבלוע יוצא מחתיכה לחתיכה בלא רוטב Food to food; Utensil to utensil; Details; Industrial examples; Stovetop grapes; Induction stovetop. See seforim by Rabbi Cohen at www.kashrushalacha.com

Sefichin Is main criteria kedushas shevi'is or concern of planting? Items without kedushas shevi'is (linen, flowers); Animal food; Non-Jew's field; Harvested in 8th year; Planted in 6th year; שדה ניר. Buy the book at www.kashrushalacha.com

Boilers Relevance; Firetube and Watertube boilers; Startup and draining a boiler; Boiler setup; Pegimah Sampling; Bishul Yisroel (creation, oversight). See seforim by Rabbi Cohen at www.kashrushalacha.com

Medicine and Toiletries for Pesach Shulchan Aruch OC 442; Inedible vs. sheloh k'derech; עירב בו דבר מר vs. נסרח גוף האיסור (Chavos Da'as, Pesach examples); Ach'shvei (אחשביה); Chametz ingredients (starch, ethanol, xanthan gum, sorbitol, flavors); Inedible (definition, ach'shvei, toothpaste, mouthwash, denatured alcohol, vitamins); Is it really chametz? See Rabbi Cohen's seforim at www.kashrushalac...

Eating during shemittah Sefichin; Kedushas shevi'is - timing, foods, flowers; Northern Aravah; Greenhouse produce (מצע מנותק); Non-Jewish fields (יבול נכרי); Heter mechirah; Otzar Beis Din; זריעה מוקדמת; Kedushas Shevi'is - proper uses, with demonstration. Buy the book at www.kashrushalacha.com

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

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, corn, crackers, doughnuts, eggs, onions, pizza, potato chips, rice, sardines, tuna fish, and wraps. See seforim by Rabbi Cohen at www.kashrushalacha.com

Freeze Dryers (אש שורף דבר מועט) Stovetop; Oven; Freeze Dryer operations; Hashgachah; Segregation; Other issues. See seforim by Rabbi Cohen at www.kashrushalacha.com

Seven Important Shemittah Disagreements – Part 2 of 2 Three kulos of Chazon Ish (ukmei peiri/אוקמי פירי, zeri'ah mukdemes/זריעה מוקדמת, s'dei nir/שדה ניר) (Otzar Beis Din) Heter Mechirah (sha'as hadchak, gemiras da'as, lo sechanem) See seforim by Rabbi Cohen at www.kashrushalacha.com

Seven Important Shemittah Disagreements – Part 1 of 2 Borders (names, southern border) Greenhouse produce (עציץ שאינו נקוב/atzis she’aino nakuv, זורע בבית/zore’ah babayis) Meshumar and Ne’evad (משומר ונעבד) Yevul Nochri (יבול נכרי) Kedushas Shevi’is after Biur See seforim by Rabbi Cohen at www.kashrushalacha.com

Steam Systems (טיפת חלב) [Part 2] Pegimah Davar hapogem Chavos Da'as Nifsal mei'achilah (inedible) vs. sheloh k'derech achilah Nisrach (spoiled) vs. irev bo davar mar (bitter component added) Pesach proofs Reversibility Nosein ta'am lifgam Three approaches Pegimah candidates - pine oil, propylene glycol, neutralizing amines, bitrex, heating oil, caustic See seforim by Rabbi Cohen at www.kashrushal...

Shemittah is starting: Preparations; Manufacturing companies; Vegetables - timing, sefichin; Options; Fruits - kedushas shevi'is, timing; Buy the book at www.kashrushalacha.com

Steam Systems (טיפת חלב) [Part 1] Introduction - cooking with steam, jacketed kettles, questions; Halacha; Observable phenomena; 10% rule; Preventing cross-contamination (7 ways); See seforim by Rabbi Cohen at www.kashrushalacha.com

Dairy Industry Overview Milk; Fat - cream, butter, buttermilk, ice cream; Protein - acid vs. rennet, casein and cheese, hard cheese vs. soft cheese, whey, cottage cheese, yogurt, sour cream; Sugar / Lactose - mei chalav, meimei chalav, uses Water and minor components See seforim by Rabbi Cohen at www.kashrushalacha.com

Chatichah Na’aseis Neveilah (חנ"נ) [Part 2] Exceptions Heter; Chametz; Issur d’rabannan; Chalav stam; Not batel b’shishim; Keilim; Sofo l’hishpashet Cold. See seforim by Rabbi Cohen at www.kashrushalacha.com

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 Hata'aroves. See seforim by Rabbi Cohen at www.kashrushalacha.com

Evaporators / Concentrators Operations - overview, effects, condensate; Hashgachah - flavor essence, cow water; Kashering - considerations, options. See seforim by Rabbi Cohen at www.kashrushalacha.com