Shake Shack in Bahrain is an American fast casual restaurant chain from New York City. It started out as a hot dog cart inside Madison Square Park in 2001, and its popularity steadily grew. In 2004 it moved to a stand within the park, expanding its menu from New York-style hot dogs to one with hamburgers, hot dogs, fries and its namesake milkshakes. Shake Shack uses all-natural 100% Angus beef only and says that its meat has neither hormones nor antibiotics.