Wine in itself is not a difficult subject to photograph.
Glass is, especially when we are talking of dark wine bottles, and we want to get some of the transparence of the wine ...
Being culturally native from Langhe, I have a strong legacy with good wine, vineyards and wine making. And this heritage helps for making me feel wine as a special product, something you take a portrait of, do not "shoot a picture" only.
In wine photography reflection is the meaningful word, and refraction too, the right tools to feel the magic inside a wine bottle.
Regalvini wine - Museo Contadino in Piemonte, Italy