Coulée de Serrant is the most famous of the two sub-appellations or Grands Crus with the Savennières appellation. The vines planted over the last five years were taken from cuttings selected from the oldest vines on Nicolas Joly's 'Clos de la Coulée de Serrant' vineyard (vines dating back to 1920). This careful selection reinforces the subtleties that the vineyard has expressed over the centuries. The average age of the vines at the Coulée de Serrant is 30 years. The domaine started biodynamic farming in 1980. Since 1984, the entire vineyard has been farmed biodynamically and no synthetic chemical product, insecticides, systemic products or nitrates have been used on the property. The estate is farmed by Nicolas Joly, one of France's foremost exponents of biodynamism.