Step 1: Prepare all materials; Butter softens at room temperature in advance; Sieve powder.

Step 2, rub the orange peel into pieces with an eraser.

Step 3, cut the butter into small pieces, add powdered sugar and salt in turn, and beat well with an egg beater.

Step 4, break up the eggs, and add the egg liquid into the whipped butter three times until the butter mixture becomes fine and fluffy.

Step 5: Drop vanilla extract into the stirred butter mixture and stir it evenly again.

Step 6, add shredded orange peel and sieved flour in turn, fully stir and knead into dough.

Step 7, knead the dough into a cylinder on the chopping board, wrap it with plastic wrap and put it in the refrigerator until the dough becomes hard.

Step 8, take out the frozen dough and brush the whole egg liquid evenly on the surface.

Step 9: Spread the white sugar evenly on the chopping board, put your hands on both ends of the dough respectively, and roll the dough back and forth so that the dough coated with whole egg liquid is evenly coated with a layer of white sugar. If it doesn't stick evenly, pour the sugar into a small bowl and continue to wrap it so that it sticks evenly with the white sugar.

Step 10: Cut the cylindrical dough into thin slices of about 0.5 cm, and put them into the baking tray evenly at intervals. Put it in the middle layer of the oven preheated to 180℃ and bake for about 15 minutes.