Answer:
What can be grown without sun or soil and can either provide nourishment or deliver poison?
I'm a flat circular spongy roll made from yeast dough and eaten toasted and buttered
It produces a flower but it is not its fruitΝΎ it produces branches which are its fruit.
What can break when we touch it
This food is a Thanksgiving tradition.
Those with eyes bigger than their stomach will definitely leave the restaurant with one of them. It is named after a house pet as well.