Chateau Petrus Pomerol (2004) Vineyard - To have a greater drainage capacity, giving way to more concentrated fruits Vinification - The berries are picked one by one during the harvest - the estate resorts to an optical sorter to determine the best berries in term of sugar concentration - Vinification occurs in concrete tanks. Ageing - To be transferred into barrels of which 50% are new for 18 to 20 months