OpenTable is an online restaurant-reservation service. The Gilded Truffle is one of the restaurants available to reserve tables on the service.
In The Simpsons: Tapped Out, Marge made reservations at the Gilded Truffle for her and Homer's anniversary, and told Homer that he must go because she wants OpenTable points. Homer pointed out that the Gilded Truffle doesn't exist anymore, but Marge ignored Homer, shouting that she wanted the points.
Behind the Laughter
OpenTable is a real online restaurant-reservation service.