Crisp Drop Sugar Cookies

2 1/2 cups sifted flour
2 tsp. cream of tartar
1 tsp. baking soda
1/2 tsp. salt
1 cup real butter, (not margarine) softened
1 tsp. vanilla
1 cup white sugar
2 eggs, well beaten

Cream butter, add sugar & blend well. Add eggs & vanilla, blend well. Sift dry ingredients together & add to butter mixture, mix to combine. Put in bowl with lid, refrigerate for at least 4 hours.

Preheat oven to 375 degrees. Form into balls a little smaller than walnut size, roll in white sugar, place on greased cookie sheet, slightly apart. Bake for 8-10 minutes or until lightly browned. Leave on cookie sheet for 30 seconds, then immediately remove to cooling rack.