0.6 oz × 29.57 ml × 0.789 g/ml = 14 g · about 98 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 grape-candy / Welch's-grape-juice aroma. Concord grapes carry it in concentrations no European wine grape (Vitis vinifera) approaches; American Vitis labrusca grapes, native to the northeastern US, hold methyl anthranilate as a signature. The "foxy" note in North American grape juice and artificial grape candy both come from the same molecule. Also used as the standard bird repellent on commercial fruit crops; birds find it intolerable.
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.
Gin, pineapple, lemon and orgeat. It is the rare gin-based tiki drink: alpha-pinene from juniper meets benzaldehyde from almond orgeat and ethyl-ester pineapple, for a tropical-but-dry profile. Named for the Waikiki hotel.
PROVENANCE
Created at the Royal Hawaiian Hotel (the 'Pink Palace') in Waikiki, the prestige beachfront resort that hosted Hollywood celebrities through the post-war era. Gin-based tiki drinks are uncommon (most lean rum) but the Royal Hawaiian's bartender used what the hotel had in stock. The orgeat-pineapple-gin combination reads as a kind of cleaned-up Mai Tai with an unexpected botanical front.