3.73 oz mixed with ice, 0.83 oz of it pure alcohol
Melt
Shaken: +20 % of the pre-batch, +0.75 oz of water
Topped
Poured after the melt, kept whole: soda water 1 oz, no alcohol
Served
3.73 + 0.75 + 1 = 5.48 oz in the glass, 0.83 oz of it alcohol
Strength
0.83 ÷ 5.48 = 15.1 % ABV as served
Ethanol
0.83 oz × 29.57 ml × 0.789 g/ml = 19 g · about 135 kcal from the alcohol alone
IN THE GLASS
VANILLIN
FROM DARK RUM · from oak barrel aging
Formula
C₈H₈O₃
Mass
152.15 g/mol
IUPAC
4-hydroxy-3-methoxybenzaldehyde
Bourbon's fingerprint, extracted from the charred American oak the law requires for aging. Same molecule as the vanilla bean's signature, so a well-aged bourbon legitimately tastes like vanilla. Chemistry, not metaphor. Cognac, aged rum, tequila reposado all extract vanillin from oak too. Different barrels, same molecule.
Lemon's defining note: technically a mix of two geometric isomers (geranial and neral) that read as the same aroma to the nose. Lemon peel, lemongrass, lemon verbena, and Indian chai all carry it. In cocktails it's what a lemon twist contributes that lemon juice can't: the volatile expressed from the oil glands, not the acid from the pulp.
The clove note, a phenylpropanoid that shows up wherever a recipe calls for clove, allspice, or nutmeg, and in rye whiskey through oak-barrel extraction. Anesthetic at high concentration; dentists used clove oil for centuries before lidocaine. The numbing sensation on the tongue from biting a whole clove is eugenol blocking nociceptor signaling at the contact point.
Dark rum, three citrus juices, grenadine, Angostura and soda. It is the classic Jamaican rum punch formula, a formal version of the traditional rhyme 'one of sour, two of sweet, three of strong, four of weak.' Myristicin from the nutmeg garnish is the finish.
PROVENANCE
The formula traces to 17th-century West Indian plantation punches; a West Indian verse recipe for Planter's Punch ran in the London magazine Fun in 1878. Myers's, founded in Jamaica in 1879, later sold a Planters' Punch rum and helped put the drink on bar menus globally. The Jamaican rhyme 'one of sour, two of sweet, three of strong, four of weak' summarizes the build: lime, sugar, rum, water/ice. Subsequent decoration with bitters and fruit juices arrived in the 20th century.