This is the weird regal history of White Castle hamburgers (Video)

In the Midwest, White Castle sliders aka "slyders") are a delicacy. The little square burgers are punctured with five holes and steamed on a griddle of onions and water to perfection. Me and the Beastie Boys are big fans. (They name-dropped White Castle on five of the thirteen tracks on Licensed to Ill.) Here is the regional chain's regal history:

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