AHA Cafe sits on Nguyen Huu Huan Street in Hanoi and serves egg coffee and mung bean coffee. The egg coffee is smooth without a fishy smell, and the mung bean coffee draws people back for another visit. Orders are placed on the first floor, then customers go up to the second-floor seating, where windows look down onto the street and passing vehicles. When it is busy, the cafe sometimes does not take orders from foreign customers.