1/2 lb burger on a brioche bun. Served with shredded lettuce, tomato, red onion, pickles. Add the melty goodness: American, cheddar, pepper jack, monterey-jack, swiss, blue cheese. The next level ($0.50): extra cheese, sauteed mushrooms, grilled onion, bacon-onion jam, garlic aioli; ($1) bacon, fried egg, avocado.