Dennis Liegey, the owner of Denny's Beer Barrel Pub in Clearfield, close to Pittsburgh, said the "Beer Barrel Belly Buster" weighs in with 10 pounds of meat molded into a 20-inch patty on a specially baked, 17-inch bun.
The balance of the weight comes from 25 slices of cheese, a head of lettuce, three tomatoes, two onions, plus copious quantities of mayo, ketchup, relish, mustard, and peppers.
Any two people who can eat it within a three-hour sitting get it for free. For everyone else, it costs $30.
Liegey says his family's pub started with a two-pound burger in 1991, and it "just kind of evolved from there."
In February, a female college student became the first to eat the burger within the three-hour time limit. Kate Stelnick, of Princeton, was awarded a special certificate, a T-shirt and other prizes, and Liegey Sr. picked up the $23.95 tab for the burger.
Over the years Liegey said he has sold more than 10,500 of the two- and three-pounders, and 853 of the six-pounders.
He has kept careful count of how many diners have finished each offering: 256 ate the whole two-pounder and 39 finished three-pounders.
The 15-pound burger can feed a family of 10, according to Liegey. He has sold two so far to teams of two people, and neither team did much more than put a dent in it.
* 1 inch = 2,5 cm
* 1 pound = 0,45 kg