There are some cocktails where you can pick out each of your the ingredients. There are others where there is just sort of a bland mix of flavors. But here we find a wonderful, complex harmonious whole! Great whiskey backbone. Sweetness and complexity from the vermouth (Cocchi di Torino here). And herbaceousness from the Chartreuse. The absinthe is more subtle than a usual, but is definitely adding something. Excellent!