Sugar Cookies

Pretty sure this is the recipe Mom uses for Christmas:

Sugar Cookies

1 cup sugar
2 eggs
1 cup butter
3 Tbsp sour cream
1 Tsp baking powder (note: 1/2 tsp also an option)
1 tsp soda
1 tsp vanilla
3 cups flour

Blend butter and flour, add soda to sour cream.  Beat eggs and sugar, add to flour mixture with sour cream.  Chill thoroughly.  Roll a small portion at a time.  Keep remaining dough chilled.  Keep rolling pin and cutters well floured.

Bake 8 to 10 minutes in 350 F oven.

To add decor, brush with slightly beaten egg white, and sprinkle with decor.