Get a Free Burger at Shake Shack Through January 2

Get the BOGO deal by ordering online or in-app using a special promo code.

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The year is coming to a close and Shake Shack is going out with a bang: The burger purveyor is serving up a BOGO deal on its ShackBurgers.

Starting today, Shake Shack customers can pop online or open the app to cash in on the deal. Order one ShackBurger online or in-app and add the promo code THANKYOU21 at checkout to get a second ShackBurger entirely for free.

The ShackBurger is a classic burger featuring a single pure beef patty, cheese, lettuce, tomato, and ShackSauce on a toasted potato bun.

This promo is good through January 2, so you can get one before your resolutions kick in or snag one to soothe that New Year's Eve hangover.

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Caitlyn Hitt is Daria IRL. Don't take our word for it—find her on Twitter @nyltiaccc.