The crazily beloved franchise from New York City just opened its second Seattle-area location in Kirkland. While the concretes, crinkle-cut fries, and chicken burger have their devotees, this is the house that smash burgers built. The original ShackBurger is bun-patty-topping ratio perfection, but the Westlake location has a Seattle-specific variation known as the Montlake Double Cut: a double cheeseburger which includes Just Jack cheese from Beecher’s, caramelized onions, and a grainy mustard-mayo.