It's ground beef casserole made into a patty and stuffed in a roll. It's like a sloppy joe, only made a lo cubano, topped with melted cheddar cheese, toothpick-skinny French fries, and shaved onions. In Hialeah or Little Havana, if you can stomach all that, munch a frita fit for a king. At El Rey de las Fritas these Cuban hamburgers are the house specialty. For a measly two dollars, El Rey's fritas are packed to the punch. They definitely rule.