Min-maxing charcoal for efficient early smelting

[SeaWarriorSon]

Do your part to minimize deforestation 

Ingredients;

300 Units of copper/bronze/moldydolbychalkos
4 peat used initially 
One charcoal
Then immediately 3 more peat (doesn't work without this)

You'll see the 300 units juuuuuust start to cool off too much right before finishing
Doesn't work for multiples of 300

[SeaWarriorSon]

If anyone finds a more efficient ratio, please let us know