Poured after the melt, kept whole: champagne 3 oz, +0.36 oz of alcohol
Served
2.75 + 0.55 + 3 = 6.3 oz in the glass, 0.96 oz of it alcohol
Strength
0.96 ÷ 6.3 = 15.2 % ABV as served
Ethanol
0.96 oz × 29.57 ml × 0.789 g/ml = 22 g · about 157 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.
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.
The dominant acid in grapes and the reason wine tastes sharp instead of flat. Forms crystals ("wine diamonds") when bottled wine gets cold; harmless, sometimes filtered out, sometimes left in as a mark of authenticity. Without acid, wine is sugar water.
A Gin Fizz with Champagne instead of soda. It is the Fizz family's wedding-reception variant: Champagne's tartaric acid and yeast autolysates add complexity the soda version does not have.
PROVENANCE
Published in Harry Craddock's 1930 Savoy Cocktail Book as a Fizz variant; Craddock's instruction was 'use champagne instead of plain soda water.' The drink was meant as an upmarket Gin Fizz for hotel-bar service. Modern bartenders use it as the bridge between cocktail culture and wedding-reception culture; a near-twin of the more famous French 75 (neither takes egg white), served long over ice.