Peel the sweet potatoes and cut them into small pieces.
Soak the sweet potatoes in cold water to remove the starch.
In a bowl, mix eggs, sugar, salt, and vanilla extract.
Sift cake flour and baking powder, then add to make a batter.
Add the sweet potatoes to the batter and mix well.
Add plenty of cooking oil to a pan and preheat.
Spoon the batter one by one into the pan and fry until golden brown.
Place on a paper towel to drain excess oil and let cool.