Harvest Moon Smoothie - cooking recipe

Ingredients

1 sweet potato, peeled, chopped, and boiled (reserve the boiling water)
1 banana, ripe
1 apple, peeled, cored, and chopped
1/8 teaspoon cinnamon
1 cup water (from the boiling sweet potato)

Preparation

Prepare the sweet potato and put it and its boiling-water in the refrigerator to cool. (If you don't have time for this, use tap water and some crushed ice to cool down the smoothie.).
Put everything in the blender and puree.