As with most drinks I now make I substitute sugar syrup for maple syrup. Tried it with this recipe and it's delish.
Gives it a nice little different layer of sweetness
My wife expressed an interest in this drink, even though she's not always a fan of whiskey cocktails. Neither one of us liked very much it at first, because it was very sour and lemony at the top. But as we got to the middle of the drink, the mint started to kick in, and we agreed that it became a much more enjoyable drink at that point. As a result, I would recommend serving this drink with a small straw so that people taste the minty part of the drink first.
Yes, really like its simplicity and the straight forward full but still fresh taste, its on my standard list. Tonight I red it up also in Dale de Groffs "Craft of Cocktail" (2002), and it seems to be a different receipt, he muddles 2 lemon wedges instead of juice and uses only 2-3 mint leaves and offers orange Curacao as alternative for the Simple Syrup. Will try his original, but will definitely not substitute with your version, but where it might come from? Thanks!
Gives it a nice little different layer of sweetness