1 1/2 c. butter (stick type)
3 c. granulated sugar
4 eggs
2 tsp. vanilla
6 c. flour
2 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt
2 c. buttermilk
1 tsp. baking soda

Cream butter and sugar together with wooden spoon. Add eggs, one at a time and beat in thoroughly. Beat in vanilla. Combine dry ingredients and set aside.

Combine buttermilk with 1 teaspoon of baking soda. It will foam up. Alternately add flour mixture and buttermilk mixture to batter. Bake on greased cookie sheets at 400 degrees for about 8 minutes.