3.06 oz mixed with ice, 0.88 oz of it pure alcohol
Melt
Stirred: +15 % of the pre-batch, +0.46 oz of water
Served
3.06 + 0.46 = 3.52 oz in the glass
Strength
0.88 ÷ 3.52 = 25.0 % ABV as served
Ethanol
0.88 oz × 29.57 ml × 0.789 g/ml = 21 g · about 144 kcal from the alcohol alone
IN THE GLASS
VANILLIN
FROM BLACKSTRAP 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.
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.
The bitter from gentian root, used across Campari, Aperol, sweet vermouth, Angostura, and most amari. Bitter compounds activate TAS2R taste receptors that evolved to detect plant alkaloids. The same machinery that makes broccoli taste bad to children also makes a Negroni taste like an adult ordered it.
Blackstrap rum, falernum, lime and Angostura. It is Barbados's national drink. Blackstrap's molasses-black color and tar-like vanillin and sotolon profile pair with falernum's clove-almond-lime-leaf complexity. The name references the rum's appearance: corn in the oil.
PROVENANCE
Barbados's national cocktail, older than Barbadian independence by a century. The blackstrap rum (very dark, very molassesy) and falernum (a Barbadian spice-and-almond liqueur) are both regional products with shared trade-route origins. The 'corn and oil' name traces to the drink's appearance: the lighter blackstrap rum floats on the denser, sugar-heavy falernum before being stirred, looking like corn in oil. The Mount Gay rum company markets the drink internationally.
