It is a fuel source for a fire and increases the probability of lighting a fire by 15%.
Cedar firewood has an estimated fire duration of 1 hour. With 120 min/kg it has a better burning time per weight than fir firewood, which gives 90 min/kg.
Cedar firewood can be harvested from cedar tree limbs, using a hatchet or hacksaw. A small limb will give 3 pieces of firewood, while a large limb gives 5. Cedar firewood can also be found inside some buildings as loot.