"Staff at this casual spin-off of steak chain the Capital Grille tout a French onion-style burger as the runaway favorite, but tell Eater a mushroom-Swiss combo and truffle-blue cheese creation continue battling it out for second. It’s no contest. The truffle burger delivers sauteed onions spooned into a mass of fragrant blue cheese that runs down the sides of the juicy patty." - Eater Staff