Established in 1984, Culvers is a part of Culver Franchising System Inc. It is a quick-service dining restaurant chain with nine Culvers and more than 400 franchised restaurants in 17 states. Located in own Duluth, Minn., its menu includes its signature ButterBurger, as well as salads, sandwiches, dinners, and desserts made with fresh, frozen custard and creamy concrete mixer. The restaurant chain operates all across Arizona and Ohio. Culver Franchising System Inc. also offers 16-week training course for new franchise partners.