This is one skill that can be quite useful if you have to deal with wet or less than ideal. By having a material that will readily catch a spark and smolder, it can increase the change that a secondary tinder will ignite. So for this class I used punk wood, which is wood that is slightly soft but not rotted out. There is a line between the two, but getting out in the woods will net you plenty of material. The Altoids tin proves its use time and time again. It was an easy process from start to finish. I encourage everyone to try this class out. This can also be done without the container by burying the material and covering it with coals for awhile. I have not tried this yet though.