Kashrus Halacha

The Three Weeks: Timing; Simcha and Music (events, dancing, music, laundry, renovations); Foods and beverages. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Rice Products and Bishul Yisroel: Rice pudding; Crisped rice; Sake. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

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

Grapes and Raisins: Seedless grapes; Golden raisins; Grape drying oil; Mevushal. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Out of techum: Flight (airport terminal); Bus (kavod habrios); Delivery. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Techum: 4 Amos; Surrounded by walls; City; Squaring of the city; 2,000 Amos; Possessions. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Tevillas Keilim Shorts; Glasses at reform temple; Vape pen (refillable); Ooni pizza oven; Scoring blade; Sprouting jar; Seltzer maker. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Xanthan Gum for Pesach - Part 2: Efshar l'sochto; Mixed liquids; Kovush; Bitul b'shishim; Bitul issur l'chatchilah; Davar hama'amid; Certification. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Xanthan Gum for Pesach [Part 1]: Production; Inedible; Taste; Poisonous. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Kosher Food in Europe vs. America: Ingredients (soda); Equipment (fruit juice, coffee); Process (chalav stam). See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Electric Shavers: Basic halachos; Razors, scissors, and misprayim k'ein ta'ar; Close shave; On the skin; Lift and cut; Sharpness. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Pesach Shorts [Part 2]: Alfalfa (kitnios, sodium copper chlorophyllin); Fenugreek; Chametz gamur (mechiras chametz). See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Kashering Shorts [Part 2]: High Altitudes; AccuSteam Griddle; Induction Cooktop; Kashering after kitnios; See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Sous Vide: How it works; Kashering; Shabbos; Shehiyah (raw, garuf v'katum, passably edible); Chazarah (flavor transfer, no barrier, cooking vs. heating). See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Pesach Update: Seltzer; Toothpaste, mouthwash, lipstick; Mouse traps; Water coolers and dispensers (Noam); Vinegar-based cleansers; Corelle. See Rabbi Cohen's seforim at ⁠⁠⁠www.kashrushalacha.com

Pesach Shorts [Part 1]: Coffee decaffeination; 5-gallon water jugs; Mashgiach visiting bakery on Pesach. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Stam Keilim For Pesach: Stam keilim ainum b'nei yoman; Shea butter; Factories. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Medicine [Part 2]: Ingredients; Levels of issur; Bitul; Flavors; Four categories; Severity of illness; Refuah yeduah; Substitutes; Decision tree. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Medicine [Part 1]: Edibility; Three categories; Ach'shvei; Vitamins; Gelcaps; Liquids and chewables. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Coffee on Shabbos: Freshly Brewed; Instant Coffee (freeze dried vs spray dried); Butter; Salt; Additives; Instant coffee with fresh coffee grinds; Liquid coffee concentrate. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

B'lios Shorts: Superheated steam; Reaction in tote; Double sink; Double oven. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

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

Vinegar (Part 1): How vinegar is made; Double fermentation; Equipment; Kashrus Concerns. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Non-Dairy Creamer: Sodium Caseinate; Bitul; Second chance. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Berachos on Berries: Blueberries; Cranberries; Strawberries; Raspberries and Blackberries; Acai Berries; Currants. See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com