Denominação de Origem Controlada
The denominação de origem controlada (or DOC) is the system of protected designation of origin for fruit, wines, cheeses, butters, and other agricultural products from Portugal. == Wines == Portuguese wine regions, as well as producers of several other products, established this system following Portugal's entry into the European Union in 1986.
Source: Wikipedia — Denominação de Origem Controlada (CC BY-SA 4.0)