Would it work to use Biochar to heat a cooking stone?


I am thinking of making a normal flat cooking stone, but with a carved pocket on the bottom of the stone where you can put a scoop of Biochar to light and heat the stone. There would also be a few channels/vents that lead from the pocket to the edge of the stone. So you light a scoop of Biochar on the ground/surface, then place the stone overtop basically trapping the embers (fed with air by the vents) and the stone heats to cook your food. The ground surface would probably be a slate with a little divit for the Biochar. Would this make sense or am I missing anything? Could a small scoop of crushed Biochar actually heat a stone enough? Would it even be practically useful?

https://preview.redd.it/au3db491oxqe1.png?width=1089&format=png&auto=webp&s=55c1c5b51d781876fcf009b4687c239746c10a2e

https://preview.redd.it/gapqyy97nxqe1.png?width=1793&format=png&auto=webp&s=676f8ff7e6393ac6d5d10b74c900de1e5396938e

submitted by /u/Skyloski1
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