1 c. vegetable shortening
3 c. sugar
6 egg yolks
3 c. flour
1/4 tsp. baking soda
1/2 tsp. salt
1 c. sour cream
6 beaten egg whites
1 tsp. vanilla or more if desired

Cream shortening and sugar. Add egg yolks one at a time, creaming well. Sift together dry ingredients. Add to shortening sugar mixture. Add sour cream. Fold in beaten egg whites. Add vanilla. Bake 1 1/2 hours at 325 degrees in a greased tube pan.