Shake Shack, very probably the world's best burger chain, is introducing a new burger to their vaunted lineup: the ShackMeister Burger. It's a 100% all-natural Angus beef cheeseburger that is topped with crispy marinated shallots and their famous ShackSauce. It's like a cheeseburger with fancy onion rings in it. I'm in.

The burger—which I'm going to assume is crunchy and juicy at the same time—originated at the 2014 Food Network South Beach Wine & Food Festival Burger Bash and will be available at all Shake Shack US locations starting January 1st for a limited time. It's the first new burger to hit Shake Shack's official menu since the Smoke Shack (the one with bacon) in 2012.

From left to right: the Shackburger, ShackMeister Burger and Smoke Shack


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