Pineapple Cake

1/2 cup shortening
1 1/2 cups sugar
1 cup undrained pineapple
1 tsp. vanilla
2 1/2 cups flour
2 tsp. baking powder
1/4 tsp. salt
1/4 cup cold water
3 egg whites

Cream shortening with sugar, add flavoring and pineapple. Sift flour, baking powder and salt. Add alternately with water to first mixture, mixing thoroughly after each addition. Carefully fold in stiffly beaten egg whites. Pour into greased cake pans. Bake at 375 degrees for 30 to 35 minutes.