INGREDIENTS
1 1/2 cups
all-purpose flour
2 tsp
baking powder
1/2 tsp
table salt
1 cup
plain non-fat yogurt
1 cup
sugar
3
large eggs
zest of three smallish grapefruits
1/2 tsp
pure vanilla extract
1/2 cup
vegetable oil
1 tbsp
sugar
1/3 cup
freshly squeezed grapefruit juice (from the grapefruits above)
1 cup
confectioner's sugar
2 tbsp
freshly squeezed grapefruit juice (from the grapefruits above)