making biochar

Pit loaded with material and lit.

Clean burn - no smoke

Burning material on top creates a "flame cap", limiting oxygen to enable pyrolyzation underneath

The product!

Pot with lid in a wood burning stove. The lid allows the gasses to escape but limits the oxygen.

Results in the pot

Charred all the way through - yum

The product is completely black. light is reflected on the patina.