Fresh Citrus Spritzer

4 juice oranges
2 grapefruits
1/4 cup pomegranate juice
1 cup seltzer
Orange slices
Mint leaves
Juice oranges and grapefruits, add pomegranate or cranberry juice and refrigerate. Just before serving, garnish each glass with an orange slice and mint leaf. Add seltzer to the juice and pour. Serves 4.