A wine lable with the Bual cultivar as the bottles contents
The few notes encountered in some of the older documents that refer to Boal, or Bual in some cases, mention how the local authorities in and around 1780 would order the local wine growers to plant Boal, amongst some other cultivars, to replace destroyed and diseased Malvasia cultivars. Boal was already then classified as a noble cultivar. It appears, however, according to the interpretation of the texts written by an agriculturalist, António Teixeira de Sousa, in 1938, that the Boal of the day, now called Bual de Madeira, was consolidated as a unique and different subspecies on its own due to the constant viticultural applications and biological changes undertaken by the madeiran "vintagers" until then. The Boal produces a semisweet Madeira that is full-bodied, fruity and rich with a splendid bouquet.
