The company Pereira D'Oliveira (Vinhos) was founded in 1850, and is still in the hands of the founding family. It has however grown by acquisition and can trace its roots backto the 1820's. Its headquarters in Funchal dates to the 1600's. D'Oliveira is reported to produce 150,00 litres of wines per year, and produces a wide range of wines including Tinta Negra wines at 3.5 and 15 year old. D'Oliveira also produces Sercial Verdelho, Bual, Malmsey and Terrantez wines. wines marketed upto 10 years old are produced using the Estufagem process, wines marketed as 15 years old are produced using the Canteiro process of maturation.