Coal Coke

Coal Coke is a fuel created by smelting Coal in a Furnace or Industrial Forge, in the same way Charcoal is made, but with Coal. Coal Coke is two times as efficient as using Coal or Charcoal as fuel, being able to smelt 16 items per unit of fuel. It can also be used instead of Charcoal to make Steel in an Industrial Forge, although since Charcoal is half as efficient as a fuel, Charcoal is usually a better option.