I used unsweetned coconut milk instead of water. I also found that I about doubled the amount of water(coconut milk) to thin out the sauce.
I also used natural crunchy peanut butter from Trader Joe's. I doubled the amount of chili paste and sugar too.
I also added Sriracha sauce to taste. It was so yummy that I could drink it. Thanks for the base recipe!
I would give the amended version 5 stars and the suggested recipe above 3 stars.