People Can't Stop Talking About Shake Shack's New Truffle Burgers

Shake Shack might not be the first place you'd think to go for a gourmet truffle experience (after all, the place literally has "shack" in the name), but from now through December 31st, this cult burger joint is just that. According to Eat This, Not That, Shake Shack is teaming up with Regalis Foods, the gourmet food purveyor, to create three new truffle burgers and a special sauce that will be available through the end of the month.

The first new addition is the Black Truffle Burger: a beef patty topped with Roth Cheese Gruyere, the black truffle sauce, and for that added crunch, some crispy fried shallots, all served on a toasted Martin's potato bun. For the vegetarians, there's also the Black Truffle 'Shroom Burger: a portobello mushroom filled with melted muenster and cheddar cheeses and then deep-fried, topped with the black truffle sauce and shredded lettuce, also served on a toasted Martin's potato bun. Finally, if you can't pick between the two, there's the Black Truffle Shack Stack which has both the Black Truffle 'Shroom Burger and the Black Truffle Burger stacked on one bun with, of course, the black truffle sauce (via Shake Shack). The last truffle option on the menu is to just pick up some of the sauce on the side, perfect for dipping fries.

Why Shake Shack's new black truffle sauce is such a big deal

If the thought of fast food with truffles doesn't exactly strike your fancy, don't worry. This black truffle sauce is no joke. It's made with Regalis' USDA Organic Black Truffle Arbequina Oil, which is touted as the only natural truffle product on the market, according to Chew Boom. While 98 percent of products that claim to be made from truffles are artificially created instead, this oil really does contain truffles. In addition to the truffle oil, the sauce also has complex umami flavors of caramelized mushrooms, thyme, bay leaf, port, madeira (a fortified wine), parmesan cheese, and aged sherry vinegar, making it an absolute flavor powerhouse.

Plus, this sauce has friends in high places. It's made in collaboration with Ian Purkayastha who, in addition to being the founder of Regalis, also works directly with chefs in 90 percent of the Michelin-starred U.S. restaurants (via Good Morning America). The truffle burgers range from $8.89 to $11.89 and are exclusively available in select New York and Los Angeles Shake Shack locations while supplies last (via Hype Beast).