Black truffle menu items always have an air of lavish aura around it, enticing diners with its nutty, earthy, and uniquely savory flavors. This reputation is the very reason why Shake Shack's Black Truffle menu had a successful test last December at four New York and California locations.

And with that success comes a much wider nationwide release of the Black Truffle menu, which includes a Black Truffle Burger and Parmesan Garlic Fries with Black Truffle Sauce. The Black Truffle Burger is a gruyere cheeseburger topped with black truffle sauce and crispy shallots on a potato bun, while the Parmesan Garlic Fries also gets a topping of the decadent black truffle sauce.

Both menu items are made with Regalis Foods’ USDA Organic Black Truffle Arbequina Oil, which is flavored with real Spanish black truffles, and are available nationwide starting Friday, October 15 through January 10.

Those who have the Shack app can get early access to try the new Black Truffle menu starting October 12.