Orange Blossom Special

2 1/2 cups buttermilk
2 cups frozen unsweetened peach slices
3/4 cup frozen orange juice concentrate
2 tablespoons brown sugar
1 teaspoon vanilla

In a blender container combine buttermilk, peaches, orange juice concentrate, sugar, and vanilla.  Cover and blend until mixture is smooth.  Pour into glasses. Garnish with orange slices if desired.  Serve at once.  Makes about 4 (about 8 ounce) servings.