These are 100% natural corks, produced by punching carefully selected cork slabs. Our experience accumulated since 1924 and our direct presence in the cork forest allows us to obtain the best Portuguese cork. The use of corks made from natural cork makes an important contribution to the refinement of the wine. They cannot be replaced in the bottling of high-quality wines. A good natural cork, owing to its characteristics of elasticity and low permeability to liquids and gases, provides optimum regulation of the exchanges of gases between the bottle and the outside environment, avoiding rapid oxidation. We produce natural corks of different grades and calibres. Technical datasheet » Production flowchart » Recommendations »