Z Burger (Dupont Circle)

This Dupont Circle eatery keeps things simple and hearty: juicy burgers, big sandwiches, crispy onion rings, and heaping portions of fries, with ordering and toppings that bring Five Guys to mind. The real draw is the milkshake menu, with at least 30 flavors on offer—fans rave about consistency and fresh fruit, like a strawberry banana shake that's worth the trip. Service tends to be fast and friendly, and the prices feel fair for the quantity you get.

Indoor seating is limited, but the spot works well for a quick bite, a late-night craving, or a fresh-air meal outside after a day exploring the city. It's an unpretentious, fill-you-up kind of place that locals and visitors alike count on for a reliable, satisfying meal.