1 large banana, peeled, sliced and frozen
3/4 cup frozen or fresh strawberries, raspberries or blueberries
3/4 cup low- or non-fat vanilla frozen yogurt
1 12-oz can or bottle of regular or diet ginger ale, chilled
Place all the ingredients in a blender or food processor. Cover and blend at highest speed until smooth.
Note: if you use fresh berries, try to use a frozen banana, and if you use a fresh banana, go for frozen berries. Otherwise your drink will be too thin. Both fruits being frozen will give you a satisfyingly thick drink.