Louis' Lunch shared by @eater says: ""Louis’ Lunch may or may not have invented the hamburger — it’s a claim that has been both certified by the Library of Congress and invalidated by evidence. Either way, the fact is the patties at this tiny brick-walled restaurant are ground fresh and cooked to order in vertical cast-iron grills dating to the late 1800s. Don’t ask for ketchup; burgers come on white toast with your choice of cheese spread, grilled onion, and fresh tomato. You can eat your burger with potato salad or a local Foxon Park birch beer in a small wooden booth etched with decades of graffiti, or consume it as originally intended: on the go."" on Postcard