I cut the Meletti to 1 oz for a 2:1 cognac/amaro ratio. This results in an acceptable sweetness and cola/caramel flavor. While pleasant enough to sip, there is not sufficient separation between the Pierre Ferrand Cognac (I used Ambre) and the Amaro Meletti to recommend this cocktail. It seems like a third contrasting component is missing that would otherwise complete this drink.