1 c. sugar
1 egg
1 c. butter
1/2 tsp. cream of tartar
1/2 tsp. baking powder
2 c. flour

Mix the ingredients in the order listed, blending well after each addition. Roll the cookie dough into balls the size of walnuts and roll in sugar. Place on ungreased cookie sheet and flatten with a sugared glass. Bake at 350 degrees until golden (8-10 minutes). Remove from cookie sheet and cool on cooling rack.