Fourthly Puzzled
Both Tina and Georgia are cullinary experts when it comes to online recipes and video tutorials, however from Georgia's side of the family, she learns it from her mother Nora as she was, is, and always will be the expert in making baked goods, soups, stews, gumbos, and more, even sweets, so in a way, there's a lifeline of cooking expertise. As for Rachael, she only knows how to cook frozens like frozen pizza or microwave tv dinners. Andy on the other hand, even though he's a child, he learns the simple things, like making sandwiches, but does learn from his momma and grandma from time to time.
Human Yet Hybrid
Only Edwina and Ida know how to cook, in a way, but it's mostly simple things like peanut butter and jelly, cheese and crackers, apple slices, salads, etc. But when it comes to doing it the easiest way they can go for, they use their magic to make something amazing, as long as they do it right depending on the spell they conjure up.