1 1/2 cups cake flour, sifted |
3/4 cup sugar |
1 1/2 teaspoons baking powder |
1/2 teaspoon salt |
1/4 cup water |
1/4 cup vegetable oil |
1/2 teaspoon grapefruit zest |
3 tablespoons grapefruit juice |
3 egg yolks |
3 eggs whites |
1/4 teaspoon cream of tartar |
2 (6-ounce) packages cream cheese |
2 teaspoons grapefruit juice |
1 teaspoon grapefruit zest |
3/4 cup powdered sugar, sifted |
6 to 8 drops yellow food coloring |
1 (1-pound) can grapefruit sections, well drained |