Step One: Gather byproducts of harvests, like crop stubble. Make sure it's dried, because water impedes the burning process.
Step Two: Set up a dry kiln. In this case, a pyramid-shaped pit in the ground. This will help create an anaerobic (oxygen-lacking) environment.
Step Three: Set fire to the biomass. Continuously place thin layers of biomass in the kiln and spread it to prevent smoke formation. Due to the nature of the pit, minimal oxygen reaches the area of combustion. Temperature should range from 600-800°C (1112-1472°F).
Step Four: Extinguish the flame with water. Dig into the pit to ensure everything is quenched. Use an infrared thermometer to confirm this.
Step Five: Measure the biochar created from the pyrolysis process. Use buckets with the same volume for consistency. Biochar samples are sent to labs to test for correct moisture and quality levels. From here, it is integrated into the soil across farmland for yield improvements of up to 20%.