Laws of kosher as they apply in contemporary times
Water See seforim by Rabbi Cohen at www.kashrushalacha.com
Asui Lehishtamesh B'shefah (עשוי להשתמש בשפע): Rashba; Logic; First source; Pegam and Aino ben yomo; Second source; Halacha; Questions. See seforim by Rabbi Cohen at www.kashrushalacha.com
Cheese See seforim by Rabbi Cohen at www.kashrushalacha.com
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'derech hamichabdim, shefah, airborne. See seforim by Rabbi Cohen at www.kashrushalacha.com
Black Ripe Olives; Zyn pouches; Flour; Molino flour. See Rabbi Cohen's seforim at www.kashrushalacha.com
Kitnios. See seforim by Rabbi Cohen at www.kashrushalacha.com
Dietary Needs at the Seder: Shiurim; Four Cups / Daled Kosos; Matzah; Marror; Charoses; Karpas; Shulchan Oreich. See Rabbi Cohen's seforim at www.kashrushalacha.com
Chametz: Flour; Oats; Mixed-in; Non-chametz; Barley; Beer and whisky; Alcohol and vinegar; Starch and glucose. See seforim by Rabbi Cohen at www.kashrushalacha.com
Hafrashas Challah: 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
Permitted Insects: Grasshoppers; Never moved; Anisakis; Copepods; Dried; Size. See seforim by Rabbi Cohen at www.kashrushalacha.com
Hard Boiled Eggs; See seforim by Rabbi Cohen at www.kashrushalacha.com
Requirement to check produce: Miut hamatzui; Defining matzui (surprise, portions); Muchzak b'tolaim; Can't check, already cooked; Smoothies and broccoli kugel. See seforim by Rabbi Cohen at www.kashrushalacha.com
Glatt and Beis Yosef: See seforim by Rabbi Cohen at www.kashrushalacha.com
Bone Products: Gelatin; Glucosamine; Calcium; L-cysteine; In a mixture; Bone char; Other (bee legs, tevillas keilim, b'lios, chicken bones). See seforim by Rabbi Cohen at www.kashrushalacha.com
Fish. 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
Medical Drinks. See seforim by Rabbi Cohen at www.kashrushalacha.com
Milsah d'avidah lit'amah (מילתא דעבידא לטעמא): Basic halachos; D'oraisah or d'rabannan; Melach habaluah m'dam (מלח הבלוע מדם); Flavors; Kitnios. See seforim by Rabbi Cohen at www.kashrushalacha.com
Rice See seforim by Rabbi Cohen at www.kashrushalacha.com
Chalav Stam: Pri Chadash and Chasam Sofer; Iggeros Moshe; Which countries; Kashering (DE, libun, kovush, gevinas akum, cheress); Goat milk and farm stands. See seforim by Rabbi Cohen at www.kashrushalacha.com
Efshar L'hasiro (אפשר להסירו): D'oraisah or d'rabannan? Fat and fat; Orange juice; Rice for Sephardim for Pesach; Hopelessly lost. See seforim by Rabbi Cohen at www.kashrushalacha.com
Creating Bishul Yisroel [Part 1-Timing]: Lighting the fire; Sephardim (part 1); End of cooking; Applications (rice, parbaked bread, canned potatoes, potato dices, hash browns); Sephardim (part 2); Certification. See seforim by Rabbi Cohen at www.kashrushalacha.com
Citrus Oils: Production (peels, purification, folds, nomenclature); Eretz Yisroel; Additives; Processes (rectification, LAR); Ambiguous wording. See seforim by Rabbi Cohen at www.kashrushalacha.com
Salek es mino (סלק את מינו); Safek chisaron chochmah. See seforim by Rabbi Cohen at www.kashrushalacha.com
מין במינו - בתא שמא או בתר טעמא; Bourbon from a Jewish owned company: Chametz after Pesach (חמץ שעבר עליו הפסח); Name/title or taste (בתר שמא או בתר טעמא); Bourbon; Distilled Alcohol (Minchas Boruch). See seforim by Rabbi Cohen at www.kashrushalacha.com
Poultry: Birds vs. animals; Teraifos (injections, damaged flesh, Meckel's Diverticulum, tzomas hagidin); Foie Gras; Packaged chicken shailos (blood, tzomas hagidim, broken bones). See seforim by Rabbi Cohen at www.kashrushalacha.com
Heat Exchangers: Principle; Types (plate, tubular, scraped surface); Kashering; Pasteurization (holding tubes, divert lines, mevushal); Regeneration. See seforim by Rabbi Cohen at www.kashrushalacha.com
Bitul Calculation: Volume vs. weight; Specific gravity; How much issur is there; Estimations; Modern pot types (stainless, aluminum, clad, disc clad, anodized aluminum); Actual calculations (overview). See seforim by Rabbi Cohen at www.kashrushalacha.com
Glatt and Beis Yosef: Introduction; Procedure (access diaphram/tarpash, bedikas pnim, bedikas chutz); Methods of checking (הכנסת יד הבודק, hagbah, miuch and mishmush, klipah); Glatt; Chalak - Beis Yosef; Sephardim; Dakos. 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
Meat Basics: Shechitah; Teraifos; Nikkur; Melichah; Simanim. See seforim by Rabbi Cohen at www.kashrushalacha.com
Oil: Source; Fish; Kitnios; Processing (deodorizing, bulk transport, conversion, tracing lines); Lubricants; Essential Oils; Citrus Oil; See seforim by Rabbi Cohen at www.kashrushalacha.com
Tasting Safek Issur: Tasting Issur; Tasting safek issur; Boiler Condensate; Mouthwash; Toothpaste; e-Cigarette Juice. See seforim by Rabbi Cohen at www.kashrushalacha.com
Tasting; Te'imas Kefeilah (טעימת קפילא); Te'imas Yisroel (טעימת ישראל); Pesach Production; What is "tasting"; Other (fast day, 6 hours); See seforim by Rabbi Cohen at www.kashrushalacha.com
Sukkah Building: Location; Walls; S'chach. See seforim by Rabbi Cohen at www.kashrushalacha.com
Dairy Bread: Basic halacha; Kashering; Bitul; Which foods; K'ein turah; Timing. See seforim by Rabbi Cohen at www.kashrushalacha.com
Yoshon: Basics; Five grains; Equipment; Guide to Chodosh; 80/20 rule. See seforim by Rabbi Cohen at www.kashrushalacha.com
Mechalyah Leh Lishvach [Part 2]: Mechalyah for foods; Knife of unknown status (safek, factory, food service); Wine and whisky; Common examples of knife halachos. See seforim by Rabbi Cohen at www.kashrushalacha.com
Mechalyah Leh Lishvach [Part 1]: How it operates; Halacha; Beis Meir; Vinegar. See seforim by Rabbi Cohen at www.kashrushalacha.com
End of Shemittah: Shemittas kesafim; Pruzbul; Arba minim (aravah, hadassim, esrog, lulav); Post-shemittah; See seforim by Rabbi Cohen at www.kashrushalacha.com
Medicine: Tablets Liquids Chewables Gelcaps Vitamins See seforim by Rabbi Cohen at www.kashrushalacha.com
Duchkah D'sakinah [Part 2]: Fish in a non-kosher fish store; Cut fruit and vegetables; Grinding and chewing; Plate underneath; Scraping; Knife sharpening; Multiple steps; Six hours. See seforim by Rabbi Cohen at www.kashrushalacha.com
Duchkah D'sakinah [Part 1] : Levels of absorption; Hadachah, gerairah, shifshuf, klipah; Knives nowadays; Cleaning methods. See seforim by Rabbi Cohen at www.kashrushalacha.com
Hafrashas Challah: Belilah Raccah; Shiur challah; Commercial hafrashas challah methods; Dough balls; Tevel (year, time-related, remote hafrashah, act of hafrashah); Sell to non-Jew. See seforim by Rabbi Cohen at www.kashrushalacha.com
Microwave and Dishwasher Kashering: Cracks and crevices; Microwave oven; Home dishwasher (how it works, kashering); Double drawer dishwasher; Commercial dishwasher (box, conveyor). 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 Creation Hashgachah; Yotzeh v'nichnas; Checking the container; DA cows; Kashering; Preventing kovush. 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
Which cooking methods require bishul Yisroel? Salting; Pickling; Smoking (cold smoke, hot smoke); Steaming; Microwaving; Induction cooktop; See seforim by Rabbi Cohen at www.kashrushalacha.com