In a discussion of Laird’s Applejack, Catherine asks if there’s a definitive recipe for the Jack Rose. I can do no better than to quote David Embury, writing in 1948:
… if you will examine a dozen books of cocktail recipes, you will find formulas varying all the way from applejack and lemon juice half and half with a few dashes of grenadine to applejack and grenadine half and half with a few drops of lemon juice.
I haven’t found quite the diversity of opinion that Embury cites — doubtless his reference library was broader than mine — but there’s nothing approaching unanimity. Embury himself favors a strong:sour:sweet ratio of 8:2:1, his standard for Sours, while Ted Haigh’s recipe in Vintage Spirits and Forgotten Cocktails calls for 1.5 oz applejack, 1 oz lemon juice, and “2 or more dashes” of grenadine, yielding a far more sour ratio of something like 12:8:1. The CocktailDB recipe, on the other hand, proposes a 3:1:1 ratio. David Wondrich’s Esquire Drinks opts for 4:2:1, Trader Vic would have the Jack Rose at a startling 2:2:1, and Regan’s Joy of Mixology instructs that we mix at 10:3:x, copping out with “grenadine to taste.”
Wondrich describes his version as “…smooth and sweetish and deeply deceptive. Sipping it, you can’t tell it contains liquor of any kind, let alone applejack.” Having made one à la Wondrich, I can confirm that assessment. Unfortunately, it’s not the drink I’m looking for, and neither is Haigh’s overly-tart version. De gustibus non disputandum est, but I cast my vote for Embury’s, in which the applejack is foremost. Thus, the Slakethirstian Jack Rose is comprised of:
1/2 oz. lemon juice
1/4 oz. grenadine
Shaken and strained.