do you enjoy cooking?
I don't cook, but i would like to learn more about it.
humans are the only creatures who cook food with fire
I had not really thought about that before. Fire has been around a long time, 
have you cooked much on a barbecue grill?
No i haven't.  How is that different from cooking with fire?
grilling uses dry heat from below the food
Are there other types of cooking, besides fire and dry heat?
there is roasting, where you cook the food evenly from all sides