1. The egg yolk protein was separated and put into a water-free and oil-free container, and the first egg was scattered by mistake.

2. Beat the egg yolks for later use. You don't need to beat them, but you can beat them completely.

3. Beat the egg whites until they are hard foam, which can pull out the triangle. Beat the egg whites to a big bubble on the surface and add one third of sugar for the first time; Add 1/3 sugar after baking until white; Add the last third of the sugar after the grain can be drawn.

4. Pour the egg yolk into the beaten egg white, turn it up and down and mix well, don't stir it to avoid defoaming.

5. sift in the low-gluten flour and mix well, which is also cut up and down.

6. There is no paper bag, so cut a hole with a fresh-keeping bag and squeeze it on a baking tray with oiled paper, but the shape is not very good. At the same time preheat the oven.

7. Bake in the oven at 18 degrees for 1 minutes.