0.95 oz × 29.57 ml × 0.789 g/ml = 22 g · about 156 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.
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.
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.
Equal parts gin, Green Chartreuse, maraschino and lime. Alpha-pinene comes from juniper, gentiopicroside from Chartreuse's 130-herb backbone and citral from the lime. A pre-Prohibition revival: dense, herbal, and strong.
PROVENANCE
Equal parts gin, green Chartreuse, maraschino liqueur, lime. Faded from menus by mid-century; resurrected by Murray Stenson at Seattle's Zig Zag Café in 2004 from a 1951 cocktail book. Stenson's revival was viral within the bartender community within a year and is the proximate cause of every Last Word descendant cocktail on the modern menu.