1. Mix the whole egg and egg yolk together, add half of the sugar and beat with a whisk
2. Stir until it changes color, add the remaining sugar
3. Finally sent to light white, the volume increased by two times
4. Add sifted low-gluten flour
5. Quickly stir with a spatula
6. Put in a piping bag
7. . Squeeze the batter onto the cookie mold
8. Put it in the oven, the upper tube is 160 degrees, the lower tube is 140 degrees, and bake for 25 minutes
