Shake Shake gives away FREE Black Truffle Burger, ‘Shroom Sandwich, or Parmesan Fries with purchase

Shake Shack is shaking up tax season with a juicy “rebate” for black truffle lovers.

From April 10 to  27, 2025, Shake Shack is offering a FREE Black Truffle menu item with a minimum purchase of $10.40 at participating locations. The offer excludes all paid add-ons such as extra avocado or bacon.

Choose from one of the following Black Truffle menu items:

• Black Truffle Burger
• Black Truffle ‘Shroom
• Black Truffle Parmesan Fries

The Black Truffle Burger is a quarter-pound patty topped with Gruyere cheese, black truffle sauce and crispy sweet onions — all on a toasted potato bun.

The Black Truffle ‘Shroom is a crisp-fried Portobello mushroom filled with melted muenster and cheddar cheeses, topped with black truffle sauce and shredded lettuce — all on a toasted potato bun.

The offer is only valid for purchases placed at a kiosk in-restaurant OR for delivery or pick-up via the Shake Shack app or at shakeshack.com.

Use promo code TRUFFLETAX at checkout.
(Note: Promo code must be entered in ALL CAPS.)

Limit one offer per order with a maximum savings of $11.99.

You must add at least $10.40 worth of food and/or drinks to your order, excluding the cost of the complimentary black truffle menu item. (Gift card purchases are also excluded.)

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