LAS VEGAS (FOX5) — Shake Shack is offering free burgers through May 31 as part of a National Burger Month promotion that includes a chance to win free burgers for a year.
Customers can receive a free burger with any order of $10 or more by using the code FREEBURGER. The offer is available through the Shack App, online, at in-store kiosks and in-restaurant.
The promotion features a different burger each week through the end of May. All burgers are made with 100% Angus beef and served on a toasted potato bun…