【Ingredients】：

Eggs

Sugar

【Step】:

1. Separate the three egg whites and yolks, add 20g of sugar to the egg whites and beat them until they reach the hooked state, and add 10g of sugar to the yolks to beat them until the volume expands and the color becomes whitish；

2. Pour the egg whites again, and mix well with the egg whites；

3. Oven at 160℃ / 330℉ for 50 minutes (cover with tin foil for about 20 minutes).