Buns as the base, lettuce as wings, pickles as breath, and tomatoes as the fire to make that fire breath.

That would make the fire solid, I believe ketchup should be the fire, and pickles as breath? I’d say the pickles are the mouth.

What about the pickle is the head, the mouth is carved out and lined with tomatos. Ketchup and other sauces are the breath. Lettuce as wings. And buns and the base. The limbs could be ground beef if this is a hamburger.