In order to be labelled as “Sélection de Grains Nobles”, each grape (infected with noble rot) is harvested manually one by one at the end of October or beginning of November, under state control. The grapes are then progressively pressed in a pneumatic press in order to extract the juice and aromas.The naturally present yeast on the grapes will start the alcoholic fermentation process that will change the grape juice into wine. Temperature controls are conducted throughout the fermentation proce