1 whole fillet with the skin on
1/2 cup soy sauce
1 onion
pepper to taste
Place the fillet on a cutting board skin side down, with a sharp knife,score diagonal lines about halfway thru the fillet.
Place the fillet on a sheet of aluminum foil skin side down.
Curl the edges of the foil to create a bowl shape.
Cover fillet with soy sauce, layer onions across the top, pepper to taste.
Cover with another sheet of foil and wrap it all together.
Place on a hot grill for about 10 minutes on each side.
Fish is done when it flakes apart.