Ingredients

• 30 ml London Dry gin (Tanqueray, Beefeater, or Sipsmith — not overly floral)
• 30 ml Campari (there is no substitute)
• 30 ml sweet vermouth (Carpano Antica Formula, Cocchi Storico, or Punt e Mes — refrigerate after opening)
• 1 large ice cube (large format dilutes slower, preserves integrity)
• 1 strip orange peel (wide, from the upper half of a naval orange)

Method

1. 1
   Chill a rocks glass in the freezer, or with ice water.

   A chilled glass maintains the temperature of a stirred cocktail for the duration it is consumed. A room-temperature glass warms a −5°C cocktail by 2–3°C on first contact — perceptible in a spirit-forward drink where the flavour balance shifts measurably with temperature. The condensation on the outside of a properly chilled glass also indicates correct serving temperature.
2. 2
   Combine gin, Campari, and sweet vermouth in a mixing glass. Add plenty of ice.

   The mixing glass is cylindrical and smooth-walled — optimised for even, predictable ice rotation during stirring. The equal-parts ratio (1:1:1) is the original 1919 Florence recipe. This ratio produces a balanced drink where no single component dominates. Departures from this ratio create stylistic variations: more gin produces a drier, more botanical Negroni; more vermouth produces a sweeter, more wine-forward result.
3. 3
   Stir — do not shake. 30 full rotations, approximately 45 seconds. You are diluting and chilling to around −5°C while preserving clarity.

   Shaking introduces thousands of tiny air bubbles that create cloudiness and change the mouthfeel. For a spirit-forward, clarified drink, opacity is a defect. Stirring builds dilution and chill without aeration. The 30-rotation standard achieves approximately 25% total dilution by volume — the precise dilution at which the flavour balance of gin-Campari-vermouth is at its optimal point.
4. 4
   Discard ice water from rocks glass. Add a large fresh ice cube.

   The spent ice in the mixing glass has melted partially and collected tiny chips. The fresh large ice cube in the serving glass provides controlled, slow dilution during drinking. Large format ice has less surface area per volume than small cubes — it dilutes more slowly, preserving the drink's character for longer. The Negroni is designed to be sipped slowly.
5. 5
   Strain the Negroni over the ice.

   The straining step removes the mixing ice, which has already contributed its required dilution during stirring. Serving the mixing ice would continue diluting the drink beyond its designed balance.
6. 6
   Hold orange peel skin-side down 5cm above the drink and express it — squeeze the zest so the fine oil mist catches the light. Run the peel around the rim, then place it on the ice. Serve without a straw.

   The expression technique releases terpene compounds — primarily limonene and myrcene — from the oil cells in the peel's flavedo layer. The fine mist that is visible in good light coats the drink surface and the drinker's nose. Running the peel around the rim deposits oil on the glass, meaning every sip arrives with citrus aroma. Serving without a straw ensures the drinker engages their nose before each sip — the nose-to-palate sequence is part of the experience.