I admire the pursuit of greatness and knowledge also. Some people are definitely producing sub par char through open burning, this is why I made the point to detail the building of a small fire (handful or so of twigs) first, then subsequent layering of fuel above that as soon as the first signs of ash appear, in this way you are 'robbing' the oxygen from the material below and producing an oxygen free burn there.

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The technique is critical for sure, as with so many things the failures are in the details. I’m going to try the technique with some of the bigger biomass I have around. I appreciate your additions to my knowledge base!