Who will battle the 15-pound hamburger?

They just couldn’t let the 6-pound burger stand alone in all its glory, could they? Trumping itself, Denny’s Beer Barrel Pub in Clearfield, Pa., has again become home to the word’s biggest hamburger, nearly tripling the size of its giganto-burger to 15 pounds. Anyone who can wolf down this megameal in fewer than five hours gets cash, a T-shirt, a hall-of-fame posting and doesn’t pay a cent for the monstrous pile of cooked cow. I wonder if Sonya