0.8 oz × 29.57 ml × 0.789 g/ml = 19 g · about 131 kcal from the alcohol alone
IN THE GLASS
DIACETYL
FROM WHITE RUM CANE · the butter note
Formula
C₄H₆O₂
Mass
86.09 g/mol
IUPAC
butane-2,3-dione
The butter note. Wanted in oak-aged Chardonnay and certain ales (English bitter, Czech pilsner) where a controlled amount adds body; unwanted at high concentrations, where it slides into movie-theater-popcorn territory. Yeast produces it as an intermediate during fermentation and reabsorbs it during conditioning. A rushed beer that skipped its conditioning rest often carries diacetyl as an off-flavor the brewer didn't intend.
A cyclic alcohol that hijacks TRPM8, the same cold-sensing receptor that fires when the skin actually hits a cool surface. The "cooling" sensation is neurological, not thermal; the drink isn't cold, the nerves just think it is. Peppermint carries the most; a mojito gets a fraction of the real thing from muddled mint leaves. Same chemistry powers menthol cigarettes, cough drops, and the post-shave aftershock of anything labeled "icy."
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.
White rum, lime, sugar, cucumber and mint. It is the Eastside transposed to rum: the Cuban Mojito meets the New York craft template. Cucumber and carvone sit atop rum's ethyl esters.
PROVENANCE
Created by Tom Walker at the American Bar of London's Savoy Hotel; it won the 2014 Bacardí Legacy global final. The name puns on 'Made in Cuba'; the cocktail is essentially a Mojito with cucumber. Walker framed it as homage to the Mojito, the Daiquiri and the Old Cuban, and it shows: the Mojito's mint-lime base is retained, the cucumber adds the freshness, and the drink reads as a Mojito that's been to finishing school.
