Operational for more than 80 years, White Castle Management Company owns and operates a chain of over 380 quick-service restaurants. It is one of the first fast food hamburger chains. The chain also serves frozen foods in nearly 30 U.S. states. Its restaurants offer cheeseburgers, including double, bacon and jalapeno varieties. The chain s restaurants also serve chicken and fish sandwiches. White Castle s restaurants feature various side dishes, including french fries, cheese sticks, and chicken and onion rings. The chain also offers a range of men and women apparel, gifts and accessories, headgears, sports jerseys and mugs. It additionally provides cookbooks, gift cards and online recipes. White Castle Management Company maintains a presence in Chicago.