Port wine left ("pass the port to port") and for the bottle or decanter not to touch the table on its way around, though some cultures reject this tradition. If a diner fails to pass the port, others at the table may ask "Do you know the Bishop of Norwich?" The Port and Douro Wines Institute is an official body belonging to the Ministry of Agriculture of Portugal and is a key institution in promoting the industry and knowledge of making port wine. It was previously known as the Instituto do Vinho do Porto. Producers of port wine are often called "shippers".
Vinho Verde white Vinho Verde is very fresh, due to its natural acidity, with fruity and floral aromas that depend on the grape variety. The white wines are lemon- or straw-coloured, around 8.5 to 11% alcohol, and are made from local grape varieties Loureiro, Arinto, Trajadura, Avesso, and Azal. Vinho Alvarinho is made from Alvarinho grapes, from a small designated subregion of Monção and Melgaço. It has more alcohol (11.5 to 14%) and ripe tropical aromas. The reds are deep red and tannic, and are mostly made from Vinhão, Borraçal and Amaral grapes. The rosés are very fresh and fruity, usually made