1. Mix sugar, vegetable oil and egg liquid evenly
2. Sift the flour, baking powder and soda powder twice, sieve into 1 and mix and stir evenly
3. Add chopped walnuts and mix well
4. Divide the mixed dough into small doughs of about 35 grams each, knead them into balls, gently press the surface of the dough with your hands, and arrange them on the baking tray with baking paper, keeping a certain gap between the cakes and the cakes.
5. Spread a layer of egg yolk evenly on the surface of each biscuits
6. After preheating the oven at 180 degrees for 10 minutes, put the biscuits into the oven and bake at 180 degrees for about 15 minutes until the surface is golden brown, take it out, let it cool completely, and put it in an airtight box.
