Cova da Beira wine Cova da Beira wine Cova da Beira is a Portuguese wine region centered on the Cova da Beira region between the Dão and Vinho Verde DOCs in the wider Beiras VR wine region. Cova da Beira was initially a separate "Indicação de Proveniencia Regulamentada" (IPR) region (and was the largest IPR in Portugal in terms of land planted with vines), but in 2005, it became one of three subregions of the Beira Interior DOC, which has the higher "Denominação de Origem Controlada" (DOC) status. Its name may still be indicated together with that of Beira Interior, as Beira Interior-Cova da
Wine color and flavor components from the grape skin. Red wine is made from dark-colored grape varieties. The actual color of the wine can range from violet, typical of young wines, through red for mature wines, to brown for older red wines. The juice from most purple grapes is actually greenish-white; the red color comes from anthocyan pigments (also called anthocyanins) present in the skin of the grape; exceptions are the relatively uncommon teinturier varieties, which actually have red flesh and produce red juice. Fermentation of the non-colored grape pulp produces white wine. The grapes from which white wine is produced