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
Chalav Yisroel & Gevinas Yisroel: Changes in chalav stam; DA Cows (displaced abomasum); Chalav stam infant formula; Mashgiach temidis for chalav Yisroel; Jewish ownership of rennet for gevinas Yisroel; Chalav stam kosher hard cheese; Butter from chalav stam; 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
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
Shemittah is starting: Preparations; Manufacturing companies; Vegetables - timing, sefichin; Options; Fruits - kedushas shevi'is, timing; Buy the book at www.kashrushalacha.com
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 this topic at www.kashrushalacha.com
Insect Issues Copepods in New York City Water (Kensico reservoir, visibility, matzui) Worms in fish Leaf miners Mechanically dried herbs Shellac Q&A Buy the book at www.kashrushalacha.com
The Sheep Head and the Skirt Teraifah Meningeal worm Davar shebiminyan Chatichah hareuyah lehiskabed