steve sarich, i bought these already marinated with a cilantro lime honey marinade. i cook them til they almost look done then take them off the grill and cover with a loose foil for a few more minutes. you dont want them over cooked. try a marinade, the big shrimp imported up here do not have all the flavor that the local small stuff has in newengland. these were pretty big shrimp and i have no idea where they were from.