Ingredients:
Watermelon - 1 1/2 cups, seeded and chopped
Honeydew Melon - 1 1/2 cups, seeded and chopped
Lemon juice - 2 limes
Vanilla nonfat Yogurt - 1 cup
Ice cubes - 1 cup

Method:
1. Puree together the watermelon and honeydew melon in a blender.
2. Add the yoghurt, limejuice and ice and blend again until smooth.
3. Pour into glasses and serve immediately.