Mr Burger (100% Halal) is a takeout shop in Hanoi's Old Quarter that sells halal handmade burgers. The beef burger has a thick patty with plenty of glazed onions and tomato, and the bun is soft with a generous portion size. The shop is family-run, and staff handle orders carefully and spend time talking with customers. There is no indoor seating, only two outdoor seats, and the sauce is somewhat spicy.