1. Ingredients: A certain amount of sweet potato powder and a certain amount of boiling water.

2. Put the sweet potato flour into a basin, pour in boiling water, mix well with chopsticks, and then knead it with your hands like dough until it can be pulled into lumps. There is no need to knead it hard like making glutinous rice balls.

3. Knead it with your hands a few times. The thinner the dough is, the softer it will be when steamed. The tighter the dough is, the harder it will be when steamed. This is your personal taste.

4. Pick the small lumps and roll them into a round shape with your palms, then press them into a flat shape, put them in a steamer and steam at normal heat for about 20 minutes.

5. Steam and remove the lid, the color of the cake will become darker.