Their products , known for their purity , are labelled under the categories of Steinfeder , Federspiel or Smaragd .
The vintners of the Vinea Wachau claim to produce quality wine under a manifesto of six Vinea Wachau wine making laws , also known as six Wachau commandments .
vintners ' products , known for their purity , are labelled under the categories of Steinfeder , Federspiel or Smaragd .
The vintners of the Vinea Wachau claim to produce quality wine under a manifesto of six Vinea Wachau wine making laws , also known as six Wachau commandments .