Because the cork is selected by a "vertical" process, the production chain for each product is entirely traceable, from the forest to the bottle. The "vertical” process means that all the cork from one lot is processed. It is not set aside and stored based on gauge ("horizontal selection”) but instead on cru, i.e. on its specific origin. Today, Mureddu Sugheri is still the only cork manufacturer to use this “vertical” selection method.

Cork is a time-honoured product, which can always adapt over the centuries, because it can keep up with the times. It stands for tradition, it has an unbeatable functionality, it is environmentally friendly through and through and can create added value. From a technical viewpoint, the stretching capacity of cork is unrivalled as it can withstand stress without being stretched. This is due to its unique micro-cellular make up – a gift from nature.
With a Poisson’s ratio of zero, only cork has this special feature, making it perfect for sealing the irregular shape of inside bottle necks.
Cork is considered by agronomists and wine experts and above all by the market as the number-one product for storing wine and retaining all its essential properties.