Blue Raspberry Fruit Shake - cooking recipe

Ingredients

1 cup frozen blueberries (unsweetened)
1 cup frozen raspberries (unsweetened)
4 -5 tablespoons plain low-fat yogurt
3/4 cup water
1/4 cup water (optional)
sugar, to taste (I use 3-4 Tbsp of sugar but it depends on the sweetness of the fruit)

Preparation

Put blueberries, raspberries, yogurt, sweetener, and 3/4 cup of water in blender.
Blend for a while - you may need to stop your blender and mix things about with a long-handled spoon occasionally.
If fruit shake is too thick, add the other 1/4 cup of water.
Drink immediately for best flavor and texture.
May be kept in the refrigerator for a while but will separate - stir to recombine.