Kroll's Diner is a '50s-style restaurant serving up German and American dishes since 1972 with locations in Bismarck, Mandan, Minot and Fargo. The restaurant is known for its award-winning Knoephla Soup and hand-scooped shakes and malts. Most often recognized for its Kroll's Lady characters of old, the Kroll's brand is marked by its famous tagline, "Sit Down and Eat!"