Place the sweet potato and water into a small or medium sized saucepan (2-4 quarts).
Bring to a boil, then reduce the heat to medium and cook for 5-6 minutes, or until the sweet potato is fork-tender. DO NOT drain the water - it's needed for the sauce!
Add the remaining ingredients and cook for 1-2minutes, whisking to combine.
Remove from the heat and puree until smooth using an immersion blender. (see note for blending alternatives)
Serve over steamed or stir-fried vegetables with protein of choice and brown rice for an easy dinner!