The charcoal oven is used to create charcoal in batches of 100, using approximately 133-140 wood (experienced user). It is the next step in the technological progression from hearths, though modern bonfire techniques and a large quantity of fires (20+?) done at the same time may outperform a group of ovens both for efficiency and speed. Largely people choose the charcoal method that suits them best.
See the charcoal guide for detailed notes on the operation of the oven, or the bonfires page for charcoal-making the bonfire way.
Built: in a compound, uses 12x16 cells
Skill/Tech required: Advanced Charcoal Production