"The “proper burger” (gouda, pickles, charred onions, sweet chile sauce, arugula, garlic aioli, brioche bun) at Duke’s carries a registered trademark. The East London-style pub’s original location in Dupont is still closed for renovations, but there are outposts in Woodley Park and Foggy Bottom and a newer edition in Navy Yard." - Tierney Plumb, Eater Staff