Mister Donut 101 is in the B1 level of Taipei 101 and is easy to find from the Taipei 101 MRT station exit. It serves several kinds of donuts, including pon de ring-style ones and Taiwan and seasonal limited flavors, and the plain donuts have a chewy texture. The shop offers new-shape products such as Pokemon and bear items, and purchased donuts can be eaten at the food court seats next to it. The sweetness is on the strong side.