Portuguese name (also Jarro, Pote, Tinha) for a large vessel similar to an amphora, made of earthenware or clay, in which red wines are produced openly under oxidative influence according to the traditional method, especially in the DOC area Alentejo. It is usual to cool the vessel with water during fermentation. Similar vessels are Dolium (Roman), Kvevri (Georgian), Pithos (Greek) and Tinaja (Spanish). See also under wine vessels.
Picture left Gustave Doré - Le tinajas de la Manche, CC BY 2.0, Link
Picture right: CC BY-SA 3.0, Enlace