Of all the Denominação de Origem Controlada (DOC) wine regions in Portugal, Bairrada produces the highest wine classification DOCs. Its fertile, flat lands and mild climate influenced by the proximity to the ocean, registers great thermal amplitude during ripening period of the grapes. This phenomenon is responsible for maintaining the acidity of the grapes, giving freshness to the wines that result from them.
This region is known for its deep colored tannic red wines made from Alfrocheiro, Aragonez, Baga and Touriga Nacional that often have bell pepper and black currant flavors in them. Some of its well-known white grapes include Arinto, Bical, Cercial and Rabo de Ovelha.