1. All preparation materials
2. Pour butter and powdered sugar together
3. Beat with a whisk until the whitish volume expands and becomes larger
4. Add the egg yolk in three times and beat well
5. Sift in low-gluten flour
6. Pour in the black tea and mix well to form a dough
7. Put it in a fresh-keeping bag and roll it out with a rolling pin, put it in the refrigerator for one hour until it hardens
8. Take the dough out of the refrigerator and slice it into chunks with a knife
9. Each biscuit coated with sugar
10. Put the biscuits on a baking tray lined with greased paper, put in a preheated 160 degree oven, and bake the middle layer for 20 minutes
Tips:The temperature of each oven is different, please adjust according to the actual situation of your own oven
