Shake Shack BOGO Guide 2026: How to Score Your Free Burger

“Shake Shack’s hot BOGO deal is live now: Buy any two items from the limited-time Korean-Style (K-Shack) menu and get the cheaper one free—think spicy-sweet BBQ burgers, fried chicken sandwiches, chicken bites, cheesy fries, or the bold Spicy Caramel Shake. Use promo code SPICYSWEET (all caps) at checkout via the app, shakeshack.com, or in-Shack kiosk. Valid through March 16, 2026 at most US locations (excludes airports, stadiums, drive-thru, and third-party delivery). Max savings ~$17.79 while supplies last—grab it before it’s gone!”