Pineapple Cake
["1/2 lb. butter", "3 c. sugar", "6 egg yolks", "3 c. flour", "1/4 tsp. soda", "1 c. pineapple yogurt", "1/3 c. crushed pineapple", "1 tsp. vanilla", "6 egg whites, stiffly beaten"]
["Cream butter and sugar. Separate eggs and drop yolks into creamed mixture. (Put whites aside.) Beat thoroughly. Add half of flour with half of yogurt; mix, then add balance of flour, yogurt and soda. Add pineapple and vanilla. Beat about 3 minutes; whip egg whites and fold into batter. Spoon into Bundt cake pan and bake about 1 hour 15 minutes at 350\u00b0. Cool and cover with Pineapple Glaze or your favorite icing."]
["butter", "sugar", "egg yolks", "flour", "soda", "pineapple yogurt", "pineapple", "vanilla", "egg whites"]