In honor of Shake Shack's 10th anniversary, lauded chef David Chang created the "Shrimp Stack" burger, which is being sold at the chain's original Madison Square Park location today: 

Momofuku chef and owner David Chang's "Shrimp Stack" burger has got, in addition to a patty of the chainlet's blend, a "smoked and griddled shrimp patty," Momofuku Hozon Sauce, Bibb lettuce, pickled onion, and quick-salted cucumber.

Chang's special-edition burger is so popular that it's created the longest line in Shake Shack history, drawing a phalanx of eager customers to Madison Square Park. They even have a special camera to monitor it all

This is how real it is out there:

As for Chang, well, he's satisfied.

Trophies. Oh yeah, if you think you're getting one of Chang's burgers today, you'll be sadly disappointed.

Fortunately, Shake Shack has more special treats planned through Friday. The celebration ain't over yet.

[via Grubstreet, Gothamist and Twitter]

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