On the side surface of a cork contained information that is either burned or printed. The customs or wine law Regulations vary from country to country. Mandatory information in Austria is the wine-growing region Quality sparkling wine and Hauersekt (not with sparkling wine). Must in Germany are the producer at quality wine, On French corks you will often find the text mise en bouteille à la propriété (Dt. Erzeugerabfüllung ). Often on the ground (wine side) is also the vintage contain.