Cooking Steps

1. 

   Step1:Mix the flour and cocoa powder, and then put in the butter. Rub by hand. Mix the flour and butter evenly. The flour looks like cornmeal. Then put in the sugar powder and mix well. Then put in the egg yolk. Mix with the flour.

2. 

   Step2:Put in the chocolate beans. Mix the dough. It's a little dry at the beginning, but don't add water. Continue kneading and it will run slowly. Then make the dough into a rectangle and refrigerate it for half an hour. Take out the dough after it's frozen hard. Cut it into 0.3cm thick. Put it in the oven with 180 degree preheating for about 13 minutes.