About 30 minutes before grilling, boil (yes, boil) 2 cups of fresh Orange Juice. Take off the stove when the juice is reduced to nearly a syrup.
About 15 minutes before grilling, rub the fish gently but firmly with chili powder, salt and pepper.
Grill skin side down nearly 7 minutes per inch thick, then finish with the grill cover on or in the oven. (Flip the fillet if confident you won't crumble it)
Ladle oj syrup on plate, (spiced with chili or sour fruit like lemon) and top nice RED chunk of fish on top.
The sweet and sour is best accented with imported beer or German wine