House ground mix w/ gruyere, onion jam, baconaise and buttermilk bun. The toppings gave a rather sweet taste. Great fresh bun. Ordered it medium, but it came out more rare. Not a bad burger, but other places I've tried recently have done this style better. Knew it was a bad sign when the first thing the waiter explained that the menu was left intentionally vague as part of the "searsucker experience".