Category Archives: Videos

Coffee Roasting (video)

Roasting green coffee beans using an old popcorn maker.

Read the full article on how I roast coffee here.

Making Biochar using Dry Mulch (video)


  • Making Biochar using dry mulch
  • Mulch is loaded into an old beer keg

Making a Coffee with Biogas (video)


  • Close the gas-out valve on the digester
  • Open the gas-out valve on the collector

Feeding a Biogas Digester (video)


  • Turn off the gas-out valve
  • Fit the effluent bucket securely