See blue link below for the excellent, most recent fiche technique/technical note from the winemakers themselves.
De Gras Carmenere Reserva 2017 - fiche technique
The 2016 vintage of this wine was awarded 90 points and Highly Recommended status by Decanter (www.decanter.com) in their October 2017 edition review of Chilean Carmenère (see blue link below).
MontGras Reserva Carmenere 2016 - October 2017 Decanter review
The wine is 85% Carmenere, 15% Merlot and hails from the Colchagua Valley, the heartland of Carmenère. Grapes are hand harvested, and the wine was oaked in a measured way (75% oaked, 25% unoaked; for the oaked portion: 80% French oak, 20% American oak; 25% of oak was new; oaking lasted 5 months) to impart complexity without loss of the distinctive Carmenère flavours and fruit.
Deep purple / red in colour with a full bouquet of spice, oak and black fruit and a firm but juicy palate. Offers plum, damson and curranty characters alongside well-integrated toasty oak and layers of vanilla. Excellent, very affordable example of Carmenère.