I just watched a really good documentary that will help a lot if you are interested in the ‘how’ of wine. It’s called A Perfect Vintage and is available on the streaming services FreeVee, Roku and Prime Video.
It showcases the 2013 vintage in the Napa Valley but goes deeply into terroir, vineyard management, harvest, winemaking and is extremely well done featuring winery owners and mostly winemakers. Very educational.
Drops of God (the series) is very good too and it goes more into tasting wine.
