The head of Tyler Chicken.  In exchange  for Costanza, he converts the concessions at Yankee Stadium  to all chicken.

TYLER:  "Instead of hot dogs, chicken dogs.  Instead of pretzels, chicken twists.  Instead of beer, alcoholic chicken."
STEINBRENNER:  "How do you make that alcoholic chicken?"
TYLER:  "Let it ferment, just like anything else."