The Must be Mushroom sand which was everything I be wishing for in a chicken sandwich. There is a similar mushroom bourbon burger at Denny's I used to love, but I have cut down on red meat and use chicken as an alternative. This is now my favorite and would recommend it to anyone who loves Chicken, mushrooms, melts cheese, all the veggies and fixins' that comes on this sandwich. They are that much better together hand-made by The Cluck Kitchen.