Illinois Breweries History: Hartland Beer Company Prairie Rock is a rustic, casual dining restaurant with on-site brewery and private party space. Weekends feature live entertainment along with promotions and special events. What makes Prairie Rock unique is the endless combination of award winning food and hand-crafted beers. From the Prairie Burger or Prime Rib with a Clocktower Amber Lager to an Arctic Summer dessert with Vanilla Creme Ale, Prairie Rock has something for everyone. The Prairie Rock Brewery employs 2 of the only 1400 Brewmasters in the United States. The Hartland Beer Company has a second Prairie Rock Brewery in Elgin, IL.