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