We cooked a 10 lb cheeseburger this summer on my Big Green Egg. It was on a 15" bun, took a head of lettuce, jar of pickles, 3 sliced red onion, about 2 dozen slices of cheese, 6 tomatoes and a pound of bacon to garnish the dang thing. We had 12 people to eat the burger and had leftovers. I can't imagine one person eating a 15 pound burger by himself.:lol: