Charcoal

An energy source to fuel up various structures with low degrees of heat it creates. It's essentially charred remains of wood.

It is a crafting material of gunpowder.

Can be used to trade items in Trade Box. It is a crafting material. Char wood in campfire or smelter to make charcoal. Stackable up to 1000 units.

Used to craft:

Gunpowder