Place lamb chops in a heavy-duty zip-top plastic bag or shallow dish.
Combine soy sauce and remaining ingredients; stir well. Pour over chops. Seal or cover, and marinate in refrigerator at least 8 hours.
Remove chops from marinade, reserving marinade. Bring marinade to a boil in a small saucepan; set aside.
Grill chops, covered with grill lid, over medium coals (300° to 350°) 8 to 10 minutes on each side or to desired doneness, basting often with marinade.