Doing a burger bar tomorrow for the Saints game

Horseradish

go balls out

grilled pineapple

peanut butter

candied bacon

avocado

thats all i can think of right now

Put some eggs, breadcrumbs, worcestershire, and knead it like you're activating gluten. Or just sear it Gaston style.

ETA: I love blue cheese or swiss on burgers.

Chili

Ketchup

Foie gras, arugula and garlic aioli

Or how about topping the burger with gulf fish.

Please post pics

Tomatoes, lettuce, cheese, bacon, jalapeños, fried egg (runny yolk ), yellow mustard, onion, sautéed mushrooms, pimento cheese, fried green tomato

Roast some tomatoes and some jalapenos. You can serve them separately and/or make an aioli of each or mix together in one aioli.

I don't put a lot of things on burgers, but for a bar, it'll be fun to have the options out. Don't over salt your meat if you salt it at all because some of the toppings are going to be salty. Put out some freshly cracked pepper and salt so folks can do that themselves.

You could go all out and all Paula Dean with some toasted donut halves along with a variety of other types of buns and some fried eggs.

In addition to bacon, you could have crispy pieces of pancetta. Just put the rounds in the oven and they'll crisp right up.

Roasted hatch chiles, sundried tomatoes, roasted red bell pepper slivers...