This is the Douro estate owned by Heredade de Esporao, one of the Alentejo's best known wineries.

"The 2015 Reserva is an old-vines (vines from 1980 to 1987) field blend—Tinta Roriz, Tinta Amarela, Tinta Barroca, Touriga Nacional, Touriga Franca and others—aged for 12 months in used French oak. It comes in at 14.5% alcohol. Tasted next to the Assobio this issue, this justifies the step up with more concentration and power. It was also showing its wood a bit too much on opening, marring the purity that the Assobio has, but an hour of air fixed that. Then, the fruit, structure and velvety texture took over unimpeded. Tightly wound and very focused, this full-bodied yet precise Tinto also manages to maintain its freshness. It shows more and more purity as it airs out. Its finish is long and gripping. The tannins are not astringent, but there are some. This has not peaked. The longer it was in the glass, the better it got. I expect it to continue improving. This does have some questions to answer in the cellar, but it certainly seems like the best Reserva yet, and the best wine I've seen from this producer yet. If you have the patience to cellar it for another couple of years, that would be good. It should hold well, perhaps longer than anticipated, so there is no rush." 93+ points Mark Squires The Wine Advocate