2. First of all, we will prepare the ingredients we need.
3. First, beat eggs in two bowls, one with yolk and the other with egg white.
4. Then stir the egg yolk, add the right amount of soft sugar and mix well.
5. Add 2 drops of white vinegar to the egg white, and then beat it into white foam with an egg beater.
6. Pour the egg yolk into the egg white twice and stir while pouring.
7. Put the flour into the stirred egg white and mix well together.
8. Finally, stir until it turns yellow, pour it into a small bowl, apply a layer of oil to the bottom to form a model, and steam it in a steamer for about 10 minute.