A nice sour - I didn't have Difford's Falernum and tried a 5 ml Velvet Falernum/5 ml 5 yr El Dorado mix. That probably hamstrung the cocktail - while it was tasty and a bit tart, it didn't have much breadth in the taste. If I am able to get some Difford's Falernum I will definitely revisit this cocktail.