fillet, leave skin on, remove ribs and pin bones. put skin side down un-ungreased foil, toss on the grill on medium heat. Mix equal parts: nancys sharp mustard, lime juice, brown sugar and horseradish. coat top of fillet with mixture grill until done (don't keep lifting the lid or it will never cook!) fillet will come right off of skin b/c you didn't grease the foil. enjoy!