Butter Cookies
1.
Put the butter indoors to melt, add icing sugar to beat, add egg whites
2.
Sift in the flour, stir evenly, put it in a piping bag, squeeze out in circular motion
3.
Leave some space, preheat the oven, 180°, bake for 20 minutes
4.
Let it cool, it will become crispy
Tips:
Stir evenly