The White Truffle Double Steakburger features two beef patties, grilled button mushrooms, Swiss cheese, grilled onions, and truffle sauce. It's basically the same as the White Truffle Prime Steakburger but with two thinner beef patties rather than a 6-oz Steakburger patty.
Like all of the chain's burgers, the newest burger comes with fries on the side.
Prices vary with location but look for the burger to cost about $2 less than its more premium counterpart.
Photo via Steak 'n Shake.