Science and Kashrus: Animal fat and vegetable oil (glycerin, fatty acids); Vape juice, e-cigarettes, and flavors; Glucose; Medicine; Vacuum and pressure. See seforim by Rabbi Cohen at www.kashrushalacha.com
Minhag Against Halacha: Maharik; Pri Chadash.See seforim by Rabbi Cohen at www.kashrushalacha.com
Medical Advocates: Your turf; Kashrus knowledge; Placing patients. See seforim by Rabbi Cohen at www.kashrushalacha.com
High School Q&A 2025: Vaping; Dairy and DE; Drinks; Hechsherim. See seforim by Rabbi Cohen at www.kashrushalacha.com
Bishul Yisroel Q&A: Remote lighting; Sephardim; Pilot light; Oleh al shulchan melachim; Non-Shomer Shabbos; Potato chips; Tuna fish; Eggs; Beans; Sushi; Corn. See seforim by Rabbi Cohen at www.kashrushalacha.com
Miut Hamatzui: Insects; Muchzak vs. matzui; D'oraisah vs d'rabannan; Definition. See seforim by Rabbi Cohen at www.kashrushalacha.com
Arlah in Vineyards: Grape growth; Arlah basics; Primary questions; Safek arlah in chutz la'aretz; Atzis she'aino nakuv; Neta revai. See seforim by Rabbi Cohen at www.kashrushalacha.com
Yoshon Nowadays: History; Practical applications. See seforim by Rabbi Cohen at www.kashrushalacha.com
Foods that might need bishul Yisroel: Not cooked; Oleh al shulchan melachim; Edible raw. See seforim by Rabbi Cohen at www.kashrushalacha.com
Kashrus Rulings of Rav Feivel Cohen (first yahrtzeit): Copepods in New York City Water (visible but not recognizable, spawned in the water system); Mechiras chametz; Chametz medicine for a choleh; Vinegar of unknown Pesach status; Spray dryer kashering; Kashering plastic; Keurig machine tevillah; Stam yayin for a mumar See seforim by Rabbi Cohen at www.kashrushalacha.com
Introduction to Basar B'chalav: Separating (waiting, hard cheese, dairy bread); Common scenarios; Concepts (ta'am k'ikar, kli rishon, zei'ah, ain habaluah yotzeh, nat bar nat, charif); B'dieved concepts (bitul b'shishim, aino ben yomo); Benefit and Cooking. See seforim by Rabbi Cohen at www.kashrushalacha.com
High School Kosher Q&A (4) - Shabbos, Brachos: Shabbos: Taking cholent on Friday night; Instant coffee, tea, and hot cocoa; Opening refrigerator and oven; Brachos: Wraps; Cholent; Granola bars. See seforim by Rabbi Cohen at www.kashrushalacha.com
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
High School Q&A [Part 2]; Hot dogs in stadium; Vaping; Toothpaste and mouthwash; Beverages; Shellac See seforim by Rabbi Cohen at www.kashrushalacha.com
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
Olives: Color; Storage; Saltwater brine curing (green olives, Kalamata olives); Caustic soda (lye) processing (black oxidized ripe olives). See seforim by Rabbi Cohen at www.kashrushalacha.com
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; Farberware pots; Milk from hundreds of cows; Emulsifier as a ma’amid. See seforim by Rabbi Cohen at www.kashrushalacha.com
Milk and Cheese: Dairy industry overview; Fat (cream, butter, ice cream); Protein (acid vs. rennet, casein and cheese, whey, cottage cheese, yogurt, sour cream); Sugar - Lactose (mei chalav); Water and minor components; Creating chalav Yisroel; Yotzeh v'nichnas; Video cameras; Creating gevinas Yisroel. See seforim by Rabbi Cohen at www.kashrushalacha.com
Sukkah Building: Location; Walls; S'chach. See seforim by Rabbi Cohen at www.kashrushalacha.com
Coffee on the road: Starbucks; Rest stops; Convenience stores; Hotel room; Office. See seforim by Rabbi Cohen at www.kashrushalacha.com