Banana Milk Shake (Batido De Banana)

Ingredients:
- 2 bananas, ripe
- 4 cups milk
- 1/4 cup sugar (to taste)
- 1 pinch ground cinnamon

Directions:
- Place all ingredients in a blender.
- Cover and blend on low speed about 1 minutes or until smooth.
- Pour into 4 or 6 glasses and serve immediately.