rec.food.cooking - join
Food, cooking, cookbooks, and recipes.
Low activity, 5319 subscribers, Usenet

rec.food.baking - join
Baking and baked goods, e.g. bread, pastries.
Low activity, 734 subscribers, Usenet

alt.cooking-chat - join
Use rec.food.cooking instead.
Low activity, 459 subscribers, Usenet