Does cooking always require heat?
I think so. Can you think of anything that you'd call cooked without heat?
Have you ever had a professional chef cook for you?
I haven't ever had a personal chef, no. Though I did get to sit at a chef's table in a restaurant once. That was really fun!
Have people ever used pottery for cooking?
Absolutely! I have seen videos of meals cooked in stone pots buried with coals.
What are some way to cook without heat?
I've made bakeless brownies before but I wouldn't call that cooking.