ETHANOL

DARK & STORMY

Bermuda, after World War I.

HIGHBALL
ETHANOL 19 G131 KCAL FROM ETHANOL6.62 OZ SERVED

SPEC

2 oz · 60 mlDARK RUM40 %
4 oz · 120 mlGINGER BEER
½ oz · 15 mlLIME JUICE

1 oz taken as 30 ml in the metric column.

METHOD

  1. 01BUILD GINGER BEER + LIME OVER ICE IN A HIGHBALL
  2. 02FLOAT DARK RUM ON TOP
  3. 03GARNISH WITH LIME WEDGE

1 oz taken as 30 ml in the metric column.

STRENGTH // WORKED

Pre-batch2.5 oz mixed with ice, 0.8 oz of it pure alcohol
MeltBuilt in the glass: +5 % of the pre-batch, +0.12 oz of water
ToppedPoured after the melt, kept whole: ginger beer 4 oz, no alcohol
Served2.5 + 0.12 + 4 = 6.62 oz in the glass, 0.8 oz of it alcohol
Strength0.8 ÷ 6.62 = 12.1 % ABV as served
Ethanol0.8 oz × 29.57 ml × 0.789 g/ml = 19 g · about 131 kcal from the alcohol alone

IN THE GLASS

GINGEROL

FROM GINGER BEER · the ginger heat

Formula
C₁₇H₂₆O₄
Mass
294.39 g/mol
IUPAC
(5S)-5-hydroxy-1-(4-hydroxy-3-methoxyphenyl)decan-3-one

Fresh ginger's heat, a phenolic ketone that activates TRPV1 (the same capsaicin receptor) at a fraction of chili-pepper intensity. Dried ginger converts gingerol into shogaol via heat-driven dehydration, which is why dried ginger reads as warmer and sharper than fresh root. Ginger beer, the Moscow Mule, and the Dark 'n' Stormy all lean on it.

PUBCHEM ↗

ALSO IN Moscow Mule · Penicillin · Floradora · Suffering Bastard · El Diablo · Dark 'n' Mule · American Buck · Presbyterian

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.

PUBCHEM ↗

ALSO IN Old Fashioned · Manhattan · Whiskey Sour · Paper Plane · Boulevardier · Sazerac · Espresso Martini · Mai Tai

CHEMISTRY

Dark rum, ginger beer and lime. Gingerol delivers the burn, and vanillin from the oaked rum carries the sweet top. The float preserves a visible gradient: the rum is less dense than the sugary ginger beer, so it sits on top and mixes only on the sip. About 12% ABV.

PROVENANCE

Two ingredients with one provenance: Gosling's (founded 1806) blends, not distills, its Black Seal dark rum in Bermuda, and a naval officers' ginger-beer factory on the island supplied the second half. The Dark & Stormy is a registered trademark of Gosling's, one of the few cocktails (with Pusser's Painkiller) whose name is legally tied to a specific brand of rum. The lime juice is a later addition; Gosling's own spec is rum and ginger beer, with a lime wedge at most.

RUM // NEARBY

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