Can you easily break it in your hands by crushing it.
Discussion
I tried with one piece and it turned into a diamond.
Some of them do. I'm assuming that is what is wanted?
It should crush in the hand easily, dry it should sound like glass and the soot on your hands should rinse clean with no soap just water. If it does those three things you have biochar.
Brilliant thanks.
How are these used? I have bits of charcoal in the wood stove that I just throw out all winter. Is this the same?
It's is used as a soil amendment. It is a bit different than the charcoal left over from a fireplace. I am still trying to learn about it. Here are some resources from #[7].
Will definitely check it out! Thanks!