See blue link below for the fiche technique/technical note from the winemakers themselves.
Altos de Jose Ignacio Reserva Tannat 2017 - fiche technique
(as can be seen from the data sheet, this wine is 'incredibly similar to' the more expensive Garzon Reserva Tannat...)
A juicy, full-bodied wine. Rich purple in colour with very fresh aromas reminiscent of red and black fruits such as plums and raspberries, with a delicate spicy nose. In the mouth, it presents a strong personality. Its mature tannins and minerality transform it into a wine with great soil identity.
This wine is 100% Tannat.