Cooking Steps

1. 

   Step1:Beat the butter and sugar well, then add the egg yolk and mix well, then sift the two kinds of flour into everything, mix and press to make doug

2. 

   Step2:Divide the dough into small dough of about 10 grams and refrigerate it for half an hour. Take it out and press the edge with your finger slightly, it will crack slightly

3. 

   Step3:Preheat oven at 170 ℃ for five minutes and bake for 20 minute