To make the perfect s'more, one needs a marshmallow, chocolate bar, and graham crackers. Specifically, one should use Jet-Puffed Marshmallows, Hershey's milk chocolate bars, and Honey Maid Graham Crackers. The instructions are to place a piece of chocolate on a graham cracker, roast a marshmallow over a fire until toasted, and then place the marshmallow on top of the chocolate and sandwich with another graham cracker square.