1/4 c. butter
1/4 c. shortening
1/2 c. brown sugar
1/2 c. white sugar
1 egg
1 c. sourdough starter
1 tsp. vanilla
3 c. flour
1/4 tsp. baking powder
1/2 tsp. baking soda
1/2 tsp. salt
Chocolate chips

Combine sugar, shortening, add eggs, sourdough, vanilla. In another bowl mix flour, baking powder, soda, add chocolate chips. Combine all ingredients in a large bowl. Mix well, let rest 15 minutes. Shape into walnut-sized balls. Flatten. Place on greased cookie sheet and bake for 10-15 minutes. Cool slightly before taking off cookie sheet. Makes 4 dozen.