Combine all marinade ingredients in a large bowl and submerge chicken wings in marinade. Cover and refrigerate overnight, or at least one hour before grilling.
Preheat grill to high heat, then spray with a high-heat cooking spray.
Grill wings for about 4 minutes per side or until nicely marked with grill marks.
Transfer to a foil-lined baking sheet, cover with foil and roast at 300 degrees for 30 minutes. Serve warm with peanut sauce.
For the peanut sauce: Place all ingredients in a blender or food processor. Process until smooth and creamy. To thin, just add a little more water.
You can heat this in the microwave, if you wish, or serve at room temperature.