Remove the skin from the salmon and cut into serving size pieces. Place in a baking dish and set aside. Heat all the ingredients together in a saucepan until the butter is melted and salts are dissolved. Let cool.

Pour sauce over salmon fillets and let marinate for 10 minutes.

Fire up the BBQ. Place a sheet of foil over the grill and place fillets on the grill and cook over a medium flame until done. Baste occasionally with sauce.