Citrus sourness mellowed by a touch of sugar and invigorated by a blast of toasty bourbon whiskey.
Many assert a classic "Golden Ratio" for all sours...
I tried this and liked it but the next time I tweaked the recipe a bit used lime instead of lemon used Peychaud's bitters instead of Angostura and only dry shook it then poured over ice it made it more foamy and it tasted more luxurious imho