Bryant RedHawk wrote:
The Retort is probably the most efficient method with a TLUD being a close second, the reason is there is more complete combustion, which does sound contrary to logic.
Angelika Maier wrote:BTW my husband makes biochar simply in a drum by observing and managing the fire. It's a bloke thing I am interested only in the end product. He says it's easy.
The real nice thing about biochar is that it uses all the garden wastes which are not suitable for the compost including thorny blackberry canes all that wooden debris.
For Aussies: do it aoutside the fire season or get permit.