Christmas at Home › Truffle Cauliflower Gratin Truffle Cauliflower Gratin $75.00 Cauliflower florets in a Gruyère–truffle béchamel, topped with panko crumble.Serves 8–10 as a side. Quantity: Add To Cart Added! Cauliflower florets in a Gruyère–truffle béchamel, topped with panko crumble.Serves 8–10 as a side.