Cork is a fantastic material. I love it. A natural bottle stopper from the bark of the cork oak. The cork comes from the bark of the tree which is harvested and then grows back again. Each tree can be harvested 12-15 times during its life which can be up to 200 years. Cork oak forests, today mostly in Portugal and Spain, are also a natural habitat for many species, some endangered like the Iberian Lynx. Before corks wine storage and transportation looked quite different. But cork also has its problems which the producers now has learned to mitigate.