SeasonalWhile supplies last
Sonic Drive-In · Smoked Gouda and Bacon Sonic Smasher
A burger made with hand-smashed Angus patties topped with smoked gouda, crispy bacon, and black pepper aioli, available in double or triple versions.
ReturningWhile supplies last$11.49
Black Truffle 'Shroom at Shake Shack — launch date and LTO window
A crispy-fried portobello mushroom filled with melted Muenster and cheddar cheeses, served with shredded lettuce and black truffle sauce on a toasted potato bun.
Key data
Shake Shack brought back the Black Truffle 'Shroom, announced September 29, 2026, available from September 29, 2026, priced at $11.49. It is a returning in the burgers category, available nationwide. This record is backed by 6 sources and 4 independent outlets.
The facts
| Field | Value |
|---|---|
| Chain | Shake Shack |
| Launch type | Returning |
| Announced | September 29, 2026 |
| Available from | September 29, 2026 |
| Available until | Not stated |
| Price | $11.49 |
| Markets | Nationwide |
| Channels | Not stated |
| Category | Burgers |
Sources
Every published launch carries at least one source with a quote from the original announcement.
- Trade mediaOctober 4, 2026
“There’s also the Black Truffle ‘Shroom, a crispy portobello filled with melted Muenster and cheddar cheeses, shredded lettuce, and the truffle sauce”
restaurantbusinessonline.com ↗ - Consumer mediaSeptember 30, 2026
“this deep-fried mushroom fuck is a bit of an odd choice for their vegetarian burger option.”
sporked.com ↗ - Consumer mediaSeptember 30, 2026
“The Black Truffle menu is back at Shake Shack for a limited time, along with new Mac & Cheese Bites”
brandeating.com ↗ - Trade mediaSeptember 30, 2026
“Black Truffle ’Shroom: A crisp-fried portobello mushroom filled with muenster and cheddar cheeses, topped with shredded lettuce and black truffle sauce on a toasted potato bun.”
qsrmagazine.com ↗ - Trade mediaSeptember 30, 2026
“Black Truffle ’Shroom: A crisp-fried portobello mushroom filled with muenster and cheddar cheeses, topped with shredded lettuce and black truffle sauce on a toasted potato bun.”
qsrmagazine.com ↗ - Consumer mediaSeptember 29, 2026
“Black Truffle ‘Shroom: A fried portobello mushroom between a potato bun topped with melted muenster and cheddar cheeses, crispy sweet onions, and black truffle sauce.”
sporked.com ↗
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