They didn't produce a 2013, so I tasted the sparkling 2014 Cosecha Especial Brut Nature, which is a 50/50 blend of Pinot Noir and Chardonnay from Gualtallary in the Valle de Uco. It fermented in concrete vats, where it was kept with the lees for one year, followed by at least one year with the lees in bottle and was hand-disgorged according to the orders, but there is no disgorging info on the back labels. In this vintage, they stopped using a liqueur d'expedition because they felt the wine showed better on its own; so, the official classification is "nature," which in Argentina is the equivalent of Europe's brut nature. In any case, they print the residual sugar of the sparkling wines on the back label. It's balanced, fresh and tasty, pleasant and easy to drink. 15,000 bottles produced.