Cálem Porto was founded in 1859 by António Alves Cálem. He had only one goal; to make the best Port there is. Vintage Port matures for about 3 years on oak wood and then goes into the bottle unfiltered. Then the ripening begins, which for vintage Port can take a very long time. Not every harvest year is suitable for Vintage Port. The Portuguese Port Institute has to approve of the wine. On average, this happens every 3 years.
