• 1/2 ~ 1 cup yogurt
• 1/2 ~ 1 banana
• 1/2 ~ 1 cup blueberries (fresh or frozen)
• 1/2 ~ 1 cup strawberries (fresh or frozen)

Juice from one orange (when in a bind I have used orange juice from a carton)
honey or sugar to taste. Mix in blender till smooth.