Ravi Karkara @ravikarkara
Harvesting #CorkTree in #Portugal To harvest the cork, the outer bark is stripped from a cork oak once every nine years. The tree is protected by an inner bark, which is always left on the tree. The harvested bark is boiled and purified. The corks are then punched. https://t.co/YHva0r60nX — PolitiTweet.org