PSI is the 23rd letter in the Greek alphabet and is the name of Peter Sisseck's (of the coveted Pingus and Flor de Pingus) utopian wine from Ribera del Duero. Peter has sought out the best independent vineyard growers in Ribera and is incentivizing them to improve viticultural practices and shun chemicals, lower yields and practice biodynamics by paying them increasingly for the fruit as they improve. The result is a "give back" to the region wine that also expresses the "soul" of Ribera.

96 Vinous

The 2021 PSI is 90% Tempranillo and 10% Garnacha sourced from old vines planted in calcareous soils and was aged for up to 16 months in mostly sizable French oak barrels. In the glass, it's garnet-red with a light purple sheen. The nose offers blood notes along with sour cherry and blackberry, intertwined with violets and dried flowers, resulting in a layered, complex profile. On the palate, it's dry and velvety. Chalky tannins define a compact mouthfeel and long-lasting fruit and floral flavors. The 2021 is a distinctive Ribera del Duero with excellent nuance and agility.

95 Robert Parker's Wine Advocate

A new era starts in 2021, when they got a new winemaker for PSI. The 2021 PSI—still unbottled, as it should have an élevage of 20 months—comes from a cooler year than 2020, but it was also a drier vintage, and the wine has more finesse than in 2020. It develops a note of honey, beeswax and pollen—Peter thinks this comes from the wine from Gumiel de Izán (and it also happens in Quintana del Pidio), as the 2021 has a significant percentage from Gumiel de Izán. 2021 is an approachable vintage, and the wine feels very elegant. It has 14.1% alcohol, slightly higher than 2020, but even if they do not harvest looking at the alcohol, they try to avoid going over 14%. I tasted a sample from 80% oak vat and 20% in barrel, with some new barrels. This is going in the right direction.
Barrel Sample: 93-95

94 James Suckling

Black cherries, asphalt, hedgerow, dark spices and dried Mediterranean herbs. Medium- to full-bodied on the palate with dusty, effusive tannins and a vertical finish. Pristine and stripped-down. Drink or hold.