Wash the sweet potatoes thoroughly, peel them, and boil until tender.
Mash the boiled sweet potatoes, then mix in sugar, milk, and butter.
Add flour and baking powder, and knead into a dough.
Shape the dough into round pieces and place them in a pan.
Lightly oil a pan and cook the sweet potato bread over low heat.
When the outside turns golden brown, it's ready.