A fan of the series living in the Bordeaux region wanted to recreate Tyrion Lannister’s favourite tipple: “Dornish Wine.” Although the series producers congratulated the winegrower on his initiative, he has been ordered to stop production; he has, however, been given the go-ahead to sell his existing stock.

The actors and the author of the book the series is based on were still able to taste the vintage, as the French winegrower was good enough to send them the last bottles, which have now become collector items for the cult series.
https://www.france24.com/en/20190430-tyrions-tipple-french-winemaker-creates-dornish-wine