Materials and dosage: 3 eggs, 90g low-gluten flour, 2g baking powder and 20g sugar. Make 1, prepare 1 Break the eggs in a bowl, and separate the yolks of the other two eggs for use. 2. Weigh flour and baking powder, mix and sieve for later use. 3. Mix 1 whole egg with 2 yolks, and beat the egg liquid until it drips, but it will not disappear immediately. In the process of beating the egg liquid, add 20 grams of sugar in three times. 4. Pour the mixed flour into the egg mixture and stir it quickly and evenly. 5. Put the piping bag on the cup, pour the batter into the piping bag and cut a small hole at the bottom. 6. Spread oil paper on the baking tray, squeeze the egg liquid on the baking tray, and squeeze out the uniform round biscuit blank. When squeezing, draw a circle vertically and squeeze. 7. Preheat the oven at 170℃ for 5 minutes, put the baking tray in the middle layer of the oven, and bake for about 15-20 minutes. Observe the surface color and bake until it is golden and the color is satisfactory.