The video starts with a close-up shot of a can of Sterno, which is a portable fuel source used for cooking and heating. The can is placed on a table, and a blue flame is visible from the top of the can, indicating that it is lit. The camera then pans out to show a marshmallow being held over the flame. The marshmallow is white and appears to be a standard-sized marshmallow. As the marshmallow is brought closer to the flame, it begins to catch fire and turn brown. The person holding the marshmallow rotates it to ensure that it is evenly toasted. The video ends with the marshmallow being removed from the flame, now a golden-brown color.