Tracking down the relationships of vitis vinifera varieties which comprise the grapes from which our wines are made is no easy task. Back in 2012, the book Wine Grapes took an impressive stab at researching as much as was possible and constructing relationships where they were known/discovered to exist. It was an onerous amount of work (case in point, the map of the Brianna group, yikes) and it’s work that never really stops. I say that as Wine Grapes (v1) was by no means the final word on many things […]
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