Five Guys has earned a loyal following for its made-to-order burgers, golden fries, and creamy milkshakes. But there's more to the chain than its classic combo (did you know Five Guys sells hot dogs?) ...

Folks, just about every chain has secret menu items these days. Five Guys — the Washington, D.C.–born burger chain — is no exception. From grilled cheese customizations and hot dog variations, here ...