80g of butter, 25g of zero-calorie sugar (25-30g of powdered sugar can be used in conventional formula), whole egg liquid 15g (at room temperature), low-gluten flour 120g, 20g of milk powder and 2g of Earl black tea powder.

Soften butter, add zero-calorie sugar (or powdered sugar) and mix well. Add the egg mixture twice and stir evenly, sift in the powder and stir until there is no dry powder, and knead it into a ball. Wrap a layer of plastic wrap and put it in a biscuit mold for molding and demoulding. After finishing, put it in the refrigerator and freeze for 30 minutes to finalize the design. It's time to take out the slices and put them in the baking tray. Preheat the oven for about 20 minutes in advance 160 degrees (the oven temperature can be adjusted according to the actual situation.