50/50 MARTINI

Early-1900s American bartending spec.

MARTINI GLASS
ETHANOL 20 G143 KCAL FROM ETHANOL3.48 OZ SERVED

SPEC

1½ oz · 45 mlGIN40 %
1½ oz · 45 mlDRY VERMOUTH18 %
1 dashORANGE BITTERS25 %

1 oz taken as 30 ml in the metric column.

METHOD

  1. 01STIR ALL INGREDIENTS WITH ICE
  2. 02STRAIN INTO A CHILLED MARTINI GLASS
  3. 03GARNISH WITH A LEMON TWIST OR OLIVE

1 oz taken as 30 ml in the metric column.

STRENGTH // WORKED

Pre-batch3.03 oz mixed with ice, 0.88 oz of it pure alcohol
MeltStirred: +15 % of the pre-batch, +0.45 oz of water
Served3.03 + 0.45 = 3.48 oz in the glass
Strength0.88 ÷ 3.48 = 25.2 % ABV as served
Ethanol0.88 oz × 29.57 ml × 0.789 g/ml = 20 g · about 143 kcal from the alcohol alone

IN THE GLASS

α-PINENE

FROM GIN

Formula
C₁₀H₁₆
Mass
136.24 g/mol
IUPAC
2,6,6-trimethylbicyclo[3.1.1]hept-2-ene

The pine note in juniper berries, and the reason gin tastes like a forest. Co-distilled with the spirit during production. Found in actual pine trees, rosemary, basil, and a good London Dry. The "Christmas tree" smell of gin and the smell of a forest floor share a single molecule.

GENTIOPICROSIDE

FROM DRY VERMOUTH

Formula
C₁₆H₂₀O₉
Mass
356.33 g/mol
IUPAC
(3S,4R)-4-ethenyl-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,6-dihydro-3H-pyrano[3,4-c]pyran-8-one

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.

CHEMISTRY

Gin and dry vermouth in equal parts, the 'wet' Martini. It was a common form in the early 1900s, before Winston Churchill reportedly drank Martinis that were 'gin to which one looked across the room at the vermouth bottle.' Equal parts means the vermouth's wormwood and wine base reads clearly.

PROVENANCE

An early Dry Martini spec, equal parts gin and dry vermouth, was common in the early 1900s; the first Martinis used sweet vermouth. The drier 'dry martini' (5:1, 8:1, 'in-and-out') emerged in the post-war era and dominated mid-20th-century bartending. The modern craft-bar revival has restored the 50/50 to canonical status, viewing the post-war dryness as an aberration. Audrey Saunders at Pegu Club and Naren Young at Dante both built their reputations partly on insistence on 50/50 ratios.

GIN // NEARBY