You use a full roll. The paper doesnt burn but acts like a wick. Make sure the roll is saturated good. I have found that the cheaper the paper the better it works. Some of the rolls that are double rolls dont work well. You want one that is kinda lose on the roll. that is why i said use the cheap ones. To put the flame out either blow it out or put some thing over it. Aluminum foil works well. I just fold some and put it in the inside of my can lid. This keeps the plastic from melting.