Step 1: Separate the egg yolk from the egg white, and put the egg yolk into the basin.

Step 2: Pour the egg whites into another pot.

Step 3: Prepare 90 grams of sugar.

Step 4: Sieve in 90 grams of low-gluten flour.

Step 5: add sugar to the egg white, beat with an egg beater until wet and foaming, and add egg yolk.

Step 6: Beat until the egg paste is thick.

Step 7: Add low-gluten flour.

Step 8: stir up and down evenly.

Step 9: Brush the microwave oven container with oil, pour in the egg paste and shake it twice to shake out big bubbles.

Step 10: put it in the microwave oven for 2 minutes at high heat and 2 minutes at medium heat.

Step 11: Take out the inverted buckle and let it cool.

Step 12: Cut and enjoy.