Charcoal

Charcoal is a burnable resource aquired when you chop down a burnt tree. It is advisable to burn smaller trees as the charcoal yield is always 1 per tree. It's more efficient to use charcoal to extend the life of your fire as it burns about twice as long as regular logs do. A good tactic is to plant a bunch of pinecones adjacent to each other then run through them with a torch. After the chaos has subsided you cut down the trees to retrieve the charcoal. Be careful though as fire can destroy any item that falls into it so always wait until all the fire is gone before cutting.