Directions Prep:20min › Cook:10min › Extra time:5min › Ready in:35min
Boil the sweet potatoes until tender. Remove from heat and peel the skin and mash the potatoes until fine.
Add the flour a little at a time to the mashed potatoes and knead together to form a firm dough. Add a little water if it's too dry. Roll the dough on a floured flat surface into a long roll about 5 cm in diameter. Cut the roll into 12 pieces. Shape each piece into a round doughnut with a hole in the center.
Heat oil in wok until hot and deep fry the doughnuts. Drain on paper towel and set aside.
Put sugar and water in a pan to make a thick syrup. Add doughnuts to the pan to glaze them completely with the syrup, remove and let cool.