Aranya demonstrates how to make an aerobic liquid plant fertiliser using things that most people would just throw away.
This is one of four videos I just added to my 'Design Your Site with Permaculture' course. https://www.learnpermaculture.com/index.php/courses-listing/dys-with-permaculture
For two-week residential permaculture design courses with Aranya visit:
https://www.learnpermaculture.com/index.php/courses-listing