Carefully peel back husk from each ear of corn to within 1” of bottom; remove silk.  Combine the butter and cilantro; spread over corn.  Rewrap corn in husks and secure with string. 

     Soak in cold water for 20 minutes; drain

     Grill corn, covered, over medium heat for 20-25 minutes or until tender, turning often. 

     Serve with parmesan cheese.