Colheita port is a single-vintage tawny port[14][15] aged for at least seven years, with the vintage year on the bottle instead of a category of age (10, 20, etc.). Colheita port should not be confused with a vintage port: a vintage port will spend only about 18 months in barrels after harvest and will continue to mature in bottles, but a Colheita may have spent 20 or more years in wooden barrels before being bottled and sold. White Colheitas have also been produced.