Grape Products:

• Hamshachah (smoothies, jam, bishul before hamshachah, raisin juice concentrate);
• Mevushal;
• Grapeseed extract;
• Grapeseed oil;
• Tartaric acid;
• Other grape products;
• Grape juice from concentrate;
• Issur hana'ah;
• Grape flavors.

See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Chalav Stam Nowadays

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Nitzuk Chibur:

See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com⁠⁠⁠⁠⁠

Citrus Scale

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Tata'ah Gavar (תתאה גבר):

• Basics;
• Tumbler;
• Heat sealer;
• Shrink tunnel.

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

Chametz After Pesach:

• Basic halachos;
• Which foods;
• Storekeepers;
• Manufacturers;
• Distributors.

See seforim by Rabbi Cohen at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠www.kashrushalacha.com

Pesach Miscellany 5784:

• Hafrashas challah (chaburah matzah baking, spelt machine matzah);
• Flower food;
• Steamers;
• Biodegradable bags;
• Wheat straw floss picks.

See Rabbi Cohen's seforim at ⁠⁠www.kashrushalacha.com