Poppy Seed Cake - cooking recipe

Ingredients

4 beaten egg whites
1/2 lb. butter or margarine
1 1/2 c. sugar
4 beaten egg yolks
1 (2 1/2 oz.) box poppy seed
1 tsp. baking soda
1 c. sour cream
2 c. flour
2 tsp. vanilla

Preparation

Cream butter and sugar.
Add egg yolks and poppy seed.
Mix soda and sour cream together.
Add to mixture.
Mix well.
Add flour and then vanilla.
Mix well.
Fold in egg whites. Bake 1 hour at 350\u00b0 in tube pan.