Established in 1921, White Castle Management Co. is one of the leading fast-food hamburger chains of restaurants in the United States. Based in Louisville, Ky., it owns and operates more than 400 White Castle Restaurants in 11 states. The restaurants offers several burger varieties, such as The Original Slider, double cheeseburger, bacon cheeseburger, jalapeno cheeseburger, chicken breast w/cheese, fish w/cheese and pulled pork, to name a few. Additionally, its side carvings include French fries, fries w/cheese, onion rings fish nibblers, chicken rings and mozzarella cheese sticks.