- In a small saucepan, combine the Kikkoman Soy Sauce and brown sugar and turn the heat up to medium. Allow to boil for about five minutes, then remove from heat and allow to cool.
- In a small bowl whisk together the peanut butter, kecap manis, lime juice, fish sauce, and red chili paste. Slowly add the coconut water until desired consistency is reached.
- Preheat grill over medium heat. In the original small saucepan with the kecap manis, add the butter over low heat and allow to melt together, stirring gently. Skewer the chicken cubes, then slather with the kecap manis, place on the grill, and allow to cook for 8 minutes, flip once, then continue to cook for another 8 minutes, or until the chicken reaches an internal temperature of 165 degrees.
- Serve immediately with peanut sauce.