Question

Why do donuts have holes in the middle?

Answer 1

Gregory suggested punching a hole in the middle of the fried cakes, so that the insides of the cakes would cook as evenly as the outsides. Experts believe that this reason makes sense, because of the way that donuts are cooked. ... Some people believe that the holes in donuts allowed them to be sold in a similar way.

Hope this helps!

~Courtney

Answer 2

So that the insides would cook as evenly as the outside is one of the main causes.