Lamazou is a fantastic cheese shop in the east 20s that also makes innovative sandwiches. Their smoked duck breast with cornichons ($10.99 for a whole) is just one of their many delicious creations on a ciabatta. The sandwich usually comes with brie but a substitution of manchego cheese actually yields more flavor. The gamey duck pares well with the cornichons and the ciabatta is freshly made. It'll make you wonder why duck isn't used in sandwiches more often.