Bún Chả 31 Hàng Bồ is a small bun cha restaurant on Hàng Bồ Street in Hanoi. It serves bun cha, grilled pork eaten with rice noodles and vegetables dipped in broth. Grilling meat is visible at the entrance, and the restaurant has operated since 1990 with bun cha as its only menu item. The space is narrow, so customers sit on the sidewalk in front of neighboring houses.