Only the best Ports of the total production of around 15,000 cases are kept to be bottled under the Quinta do Crasto label, somewhere between 1,500 and 3,000 cases, the remaining being sold in bulk to traditional shippers. These wines are vinified in traditional lagares and are bottled as Vintage or Traditional Late Bottled Vintage Ports. The decision to produce a Vintage Port belongs to each individual producer, Vintages are produced only in very good years and a variable volume of Traditional Late Bottled Vintage is normally produced every year