Tell you a secret (well maybe not a secret) if you notice that the peeled yellow yam have a reddish colour, Sprinkle some lime juice on the peeled yam to avoid this from happening. Note: Yam is not sweet potatoes.
1 lb. yellow yam (peeled, washed, sliced and cooked)
2 tablespoon coffee (instant)
1/2 cup evaporated milk
Sweetened condensed milk (optional)
2 tablespoon cocoa
Boil yam in three cups water with salt until cooked. Allow to cool. Add to blender and blend until it becomes soft (like mashed potatoes). Add coffee, evaporated milk, and cocoa and blend until it becomes frothy. Add sweetened condensed milk (optional) blend for another five minutes. Pour into glass and serve chill.