Using coffee as an alternative heatsource.

Using coffee for growing mushrooms is a nice way to get coffeewaste out of the picture and into the soil. As compost...

But using coffeegrounds as an alternative heatsource? It works!

Even coffeecharcoal is as hot as normal charcoal..

This is my first test to see if it works.
And it does.
To be continued...
If you like my tests, UPvote!