Bonsai Nut
Nuttier than your average Nut
In particular, this is the first time that I've ever heard the notion that akadama/kanuma are "naturally" calcined. Every definition that I've seen for calcination talks about it as a human-driven transformation.
Well... I need to do a better job checking my sources before opening my mouth Because some of the akadama I use is described as "calcined clay product" (Akadama Yaki and Akadama Tokoname) I assumed that's how it came out of the ground It turns out that it is heat-treated after it is removed. Apparently some akadama is calcined, some is not. So I am going to edit out my error in the above post
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