'Superior' is a white-skinned and white fleshed, midseason potato variety. It was released by the University of Wisconsin potato breeding program in 1962 and is not under plant variety protection. It is a progeny of a cross between B96-56 and M59.44 and was first grown in 1951. B96-56 was also a parent of 'Kennebec'. Like the potato variety 'Atlantic', Superior is widely grown for chipping right off the field. Marketable yields are fairly high.
It is generally free from defects such as growth cracks, greening, secondary growth, heat necrosis, hollow heart, and vascular discoloration in tubers, but is susceptible to potato virus Y, potato virus X, and late blight.