1, flour and baking powder are well mixed.

2. Separate the egg yolk from the egg white, mix the egg yolk, 40 grams of sugar and a little oil, and stir well, taking care not to produce too many bubbles.

3. Pour the mixture of flour and baking powder into the egg yolk mixture and stir well.

4, began to beat the egg whites, after some bubbles, add 40 grams of white sugar, or you can add white sugar twice, and beat continuously ...-until the egg whites are foamed, they will not disappear if they stand still, and they can be thinner. This seems to be called dry foaming.

5. Add the egg white into the egg yolk mixture for 2 to 3 times, stir it evenly once, and then add it.

6. After mixing completely and evenly, prepare a container of microwave oven with oil on all sides. Pour the fully mixed slurry into the container.

7. Shake the container filled with powder slurry on the table, so that the big bubbles can be driven out.

8. Then you can enter the microwave oven, and the microwave oven is set to medium and high-grade firepower for about 4 minutes. Open it after 4 minutes. If it is not ripe enough, heat it again 1 minute.