Step 1: Add 10 grams of fine sugar to the egg yolks and mix well. Add 25 grams of corn oil and mix well. Add 50 grams of pure milk and mix well. Sift in 80 grams of low-gluten flour and mix into an egg yolk paste. Step 2: Beat the egg whites with an electric egg beater.

Soak, add 40 grams of fine sugar in two batches, beat at high speed until wet peaks form, and form a curved hook shape; mix the two above in step 3, pay attention to the technique (mix from bottom to top, do not stir in circles) to avoid burning.

Bubble.