4 1/2 c. flour
1 tsp. baking soda
1 tsp. cream of tartar
1 c. butter
1 c. cooking oil
1 c. powdered sugar, sifted
2 eggs
1 tsp. vanilla
1 c. sugar

Sift together flour, soda, cream of tartar. Cream butter, oil, sugar, powdered sugar; add eggs, vanilla and dry ingredients. At this point I add 1/3 cup extra flour. Drop by rounded teaspoon 3 inches apart on greased cookie sheets. Flatten each cookie with greased bottom of drinking glass dipped in sugar. Bake at 375 degrees for 10 minutes. Makes 7 dozen.