Pedro Ximénez grapes are harvested and dried for up to 2 days in the hot September Spanish sun. Fernando de Castilla deals only in prestigious, premium wines. The sherries are all from individual soleras. They are bottled without blending, cold stabilization or filtration of any kind in order to preserve the subtlety, purity and distinctive aromas of these premium wines. The products are all bottled in clear glass to show off the wonderful colour of these wines. After fortification ageing takes place in a solera system. The initial wine has a sugar content of around 300 grammes per litre and is very concentrated. Having spent a long period, around 20-30 years, in barrels the final sugar content of the Antique PX is around 450 g per litre and the colour has developed over a period from a dark mahogany into an intense black.