>I don't know how it is extracted, but I guess it is the same as birch sap.
>Then it could be done with a sharp stone, or by just breaking a branch.

I visited a couple of maple products producers and it's exactly that. The
way they collect the sap hasn't changed in thousands of years: they simply
drill a small hole in the tree (which could be done easily with a sharpened
bone or stone) and then they put a small beak-like metal thingie, then they
hang a pail below it. The syrup is done by boiling the sap, nothing is added
or cut out. That's why I would tend to think it's paleo.
However, the sap is collected only in springtime, which would make it a
rather seasonal product.

Medusa
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