Charcoal is produced by ANY fire source, not just campfires.
Stoves (any number of burners from 1-6).
Fireplaces.
Fire Barrles.
Campfires.
ALL burned out fires, of any kind, produce charcoal- 1 piece per/1 FULL in-game hour of burn time.
The text above in the article, is misleading, and may cause new players to misunderstand, and think charcoal is only created in campfires. This needs to be changed. And no, I have no desire to create an account and edit it.