Tinta Amarela, productive dark-skinned Portuguese grape variety grown in the douro for port. It can yield fine, attractively scented wines but suffers the singular disadvantage of being particularly sensitive to rot. Nonetheless it accounts for around 20% of vines in the Baixo Corgo, the coolest and wettest of the Douro’s three subregions. As trincadeira, its official name, it is a highly regarded variety in the more arid regions of the Alentejo and southern Portugal, where it produces rich, powerful dry reds.