On non-toroid donuts

I've had no lunch except for a donut. That was dumb. And a packet of crisps (salt and vinegar) at 10am, which potentially doesn't count as lunch. The donut was nice. It had strawberry jam in, which I would generally prefer not to be there, but since it was bought for me, it seemed churlish to complain. Especially as I was quite hungry. My favourite ones are the ones with just a hole. They also have a higher surface area (I think) and hence more sugar. Big mouth mess!