(Wine-Searcher) - Ten years after "Mondovino" mocked Michel Rolland, Robert Parker and Robert Mondavi, director Jonathan Nossiter is back on the wine trail, this time in Italy

The director of the controversial but highly acclaimed documentary Mondovino is back with a new film, celebrating natural wine producers in Italy.

Jonathan Nossiter's “Natural Resistance,” premiering at this week’s Berlin Film Festival, follows four winemakers in Tuscany, Emilia-Romagna and Piedmont.

While “Natural Resistance” is about wine, it is not intended to be a sequel to “Mondovino,” according to Nossiter. However, it’s likely to ruffle a few feathers. Not only does it extol the virtues of so-called "natural wine" – a term that has no agreed definition – it attacks the country’s quality system, the denominazione di origine controllata (DOC), as well as conventional grape growing methods.

“Natural Resistance” is “the most joyful and optimistic film I have ever made," said Nossiter. But the introduction to the 86-minute documentary, published in the Berlin Film Festival brochure, will displease many Italian wine producers within the country’s DOC system: “What looks like a bucolic paradise, where intelligent people produce wine according to time-honored and organic methods, is actually revealed to be a battleground. The DOC association, which is supposed to look after the interests of independent vintners, promotes winemakers who produce vast amounts in a standardized quality; and the agricultural industry with its hygiene regulations excludes traditional methods of production.”