Place all ingredients (excluding yacon syrup) in a blender and blend for 2 minutes. Add yacon and pulse 2-4 times until well blended. Serve and enjoy immediately of seal in an airtight mason jar in the refrigerator for up to 7 days.
Helpful Hint: If you don't accidentally drink all of the chocolate milk as soon as you finish it, note that it is completely normal for the milk to separate slightly. Simply shake before serving.
Source: Naturally Healthy Desserts