Diane, Texas

It has been 40 years and the person who taught me is dead, but this is close.
About 4 cups mashed sweet potatoes, make sure there is no excess liquid if using boiled (baked or boiled)
2 to 3 tablespoons sugar, add more if prefer them sweeter)
1 egg slightly beaten
Add 1 or 2 tbsp. flour to thicken enough to make patties or balls
cinnamon to taste
vanilla if like

Make into flat patties, roll in crushed cornflakes and deep fat fry. Also, roll mix around marshmallow, roll in cornflakes and fry.

I hope this is close to what you are looking for, I called my cousin and this is as close as we could come to measures. Most of the time, we just added a little of this and that. Many times in the resturant, it was a way of using up left over candid potatoes.