How to make Biochar?

How is Biochar made?

Gasification:

The most common way is to cook DRY biomass in absence of oxygen. This produces combustible fumes that used as source of heat, or used as fuel in generators to produce electricity.

• Open Pit
  (shovel and a match)
  
• Tin Can
  (small stove and gasifier)
• Drum
  (bigger stove and gasifier)
• Biorefinery / Pyrolysis Plant
  "Modern pyrolysis plants can use the syngas created by the pyrolysis process and output 3-9 times the amount of energy required to run."

*** (For all gasification models, Avoid Carbon Monoxide Fumes!) ***