The Ancestral Method EXAMPLES Pét-nat Also known as the méthode rurale or méthode ancestrale, it is an increasingly common technique that experts believe predates the méthode champenoise, or traditional method. Just like any other wine, sparkling wine is first fermented in a barrel (or a stainless steel or concrete tank). Then, before all the residual sugar has been converted into alcohol and CO2, the wine is chilled, riddled
