2 c. buttermilk
1/2 c. sugar
1 c. crushed pineapple in juice
1 egg white, slightly beaten
1 1/2 tsp. vanilla

Combine first three ingredients and freeze until slushy. Place in a chilled bowl, adding egg white and vanilla. Beat until light and fluffy. Return to freezer in covered mold or foil refrigerator trays. Beat again twice at 30 minute intervals. Remove from freezer to refrigerator about 20 minutes before serving.