Cork is the bark of cork-oak tree and the largest supplier of wine cork is Portugal. Those more fortunate than me tell me of the lovely cork forests there. Environmentalists are doing what they can to urge us to stick with natural cork as the seal of choice because it’s a renewable resource and the forests are habitat to endangered species.
The tree has to be about 40 years old before the cork is suitable for wine. If it’s harvested properly, the tree doesn’t die. The bark grows back and the tree can be harvested every nine years. The bark is seasoned and treated for impurities before they finally punch those cute little corks out of it, clean them up and stamp our name on them. Then, they report for duty! More on corks