Kashrus Halacha

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.kashrushala...

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

Davar Charif;  Gemaros;  Six halachos;  What is charif?   Principles and Examples;   Vegetable name translations;   See seforim by Rabbi Cohen at www.kashrushalacha.com

Vinegar - Part 2 of 2.  Vapor scrubber;  Pasteurization;  Halachic issues (brief);  Kovush - time, b'dieved, moving around;  Stam yayin - milui v'irui, machniso l'kiyum, mevushal;  Chametz;  Kashering;  See seforim by Rabbi Cohen at www.kashrushalacha.com

Vinegar - Part 1 of 2;  Acetobacter;  Vinegar types;  Ingredients;  Production;  Generator;  Acetator;  Concentration. See seforim by Rabbi Cohen at www.kashrushalacha.com

Commercial Dishwashers. Final installment of the 5 part series on washing dishes. Operations;  Box dishwasher;  Conveyor dishwasher;  Meat and dairy in same dishwasher;  Kashering;  Three compartment sink;  Dish sanitizer. See seforim by Rabbi Cohen at www.kashrushalacha.com  

Double Drawer Dishwasher;  Part 4 of 5 on washing dishes;  Nat bar nat;  Dairy and meat simultaneously;  Hot or cold. See seforim by Rabbi Cohen at www.kashrushalacha.com

Residential Dishwashers; Part 3 of 5 on washing dishes; Operations;  Considerations;  Technological changes;  Pre-rinse cycle;  Wash cycle;  Sanitize rinse cycle;  Kashering. See seforim by Rabbi Cohen at www.kashrushalacha.com

Washing Meat and Dairy Dishes in One Sink  Part 2 of a 5 part series on washing dishes Nat bar nat;  Irui kli rishon;  Proper practice;  Non-kosher;  Pesach. See seforim by Rabbi Cohen at www.kashrushalacha.com

Washing Dishes  Part 1 of a 5 part series on washing dishes; Principles / General Halachos;  Nat bar nat (primary details, extensions);  Pegimah.  See seforim by Rabbi Cohen at www.kashrushalacha.com

Kedushas Shevi’is: Which items have kedushas shevi’is (food, animal food, flowers, yevul nochri) Eating without wasting (gram hefsed, shemittah bins, children) Eating – practical examples (lemon, apple, wine, animal food) Keep produce in Eretz Yisroel Sechorah Biur (how, after biur) See seforim by Rabbi Cohen at www.kashrushalacha.com

Is It Chametz? Foods Non-Foods Medicines Pets See Rabbi Cohen's seforim at www.kashrushalacha.com

Safek Issur Mashehu; Rice Cereal for infants on Pesach; איסור משהו; נתקבעו; יבש ביבש; סכין; ירדו גשמים See Rabbi Cohen's seforim at www.kashrushalacha.com