Papaya Shake

1 ripe papaya, peeled, seeded and cut into chunks
1 teaspoon vanilla extract
3 tablespoons granulated sugar
1/8 to 1/4 teaspoon ground cinnamon
1 cup milk
12 ice cubes
Fresh mint leaves

Combine first 5 ingredients in a blender and process until smooth. Add ice cubes; process until frothy. Garnish with mint leaves, if desired.

Makes 3 cups.