Free small lemonade with any sandwich or burger (code FREESIP)

National Lemonade Day

Buy any sandwich or burger and get a small lemonade free from August 20 through August 23. Add both items to your cart and enter code FREESIP at checkout. The code is case sensitive and works in all caps only. Redeem in the Shake Shack app, on shakeshack.com, or at an in-Shack kiosk. Shake Shack delivery and pickup count. Not valid for drive-thru or third-party delivery. Excludes airports, stadiums, arenas, travel plazas, and museums. Limit one free small lemonade per order. Max savings $4.99. Paid add-ons such as boba are excluded. While supplies last. Cannot be combined with other offers.