Wash the sweet potatoes thoroughly, peel them, and cut them into small cubes.
Place the cubed sweet potatoes in a steamer and steam until fully cooked.
Put the steamed sweet potatoes in a bowl and mash them.
Crack the eggs and add them to the mashed sweet potatoes, mixing well.
Add sugar and salt, and mix to make a dough.
Lightly coat a pan with cooking oil and preheat over medium-low heat.
Spoon the batter onto the pan one spoonful at a time.
Cover with a lid and cook slowly over low heat.
Once the bottom turns golden brown, flip and cook the other side.
When fully cooked, transfer to a plate to serve.