Poppy Seed Cake
["4 egg yolks", "1 1/2 c. sugar", "1 c. butter", "1 pkg. poppy seed", "2 tsp. vanilla", "2 1/2 c. flour", "2 tsp. baking powder", "1 tsp. baking soda", "1 c. sour cream", "4 egg whites (stiff)"]
["Cream sugar and butter.", "Add poppy seed, egg yolks and vanilla and beat.", "Sift flour, baking powder and baking soda.", "Add flour with sour cream to the mix.", "Fold in egg whites.", "Bake at 350\u00b0 for 50 minutes."]
["egg yolks", "sugar", "butter", "poppy seed", "vanilla", "flour", "baking powder", "baking soda", "sour cream", "egg whites"]