Ingredients: purple potato, butter, sugar, eggs, flour.

Practice steps:

Step 1: Prepare the materials in advance. Peel and slice the purple potato in advance and steam it in the pot.

Step 2: Add sugar to butter and stir until white.

Step 3, add the egg liquid in three times and stir evenly.

Step 4, add purple sweet potato paste and stir evenly with a scraper.

Step 5, add flour and stir evenly with a scraper.

Step 6, put the dough in the refrigerator for one hour.

Step 7, roll the dough to a thickness of 4 cm with a rolling pin.

Step 8, make a square figure with the mold.