Marcelo Papa, winemaker for Concha Y Toro, Chile What a difference a year makes. It’s a statement of the obvious where wine is concerned, but this is a tale of two consecutive vintages where variation is not down to sunshine levels, rainfall, hail, diurnal temperature range, or any of the other myriad weather variables that affect or dictate the quality and quantity of grapes in any season. The difference between the 2012 and the 2013 Marqués de Casa Concha Cabernet Sauvignon