1. If black sesame and white sesame are raw, fry them separately in advance for later use. White sesame seeds and fine sugar are put into the grinding cup of the food processor together. Beat white sesame seeds and sugar into powder.

2. The butter melts into a liquid state;

3. After mixing and sieving, pour in low-gluten flour and baking soda.

4. Add ground white sesame seeds and sugar.

5. Pour in black sesame seeds. Add egg whites bit by bit and knead them into dough by hand.

6. Put the dough on the chopping board and knead it into a long strip as shown in the figure, then put it in the freezer of the refrigerator and freeze it for about one and a half hours until it becomes hard.

7. Take out the frozen dough, cut it into pieces about 0.8CM thick, then put it on a baking tray and put it in a preheated oven.

8./kloc-bake at 0/65 degrees for about 20 minutes until the surface is colored, then turn off the oven, put the cookies in the oven 10 minutes and take them out.

9. Eat it as soon as it gets cold.