Hello Sarah,
The beauty of a classic Negroni lies in its balanced and straightforward formula. The standard recipe uses an exact equal ratio of three core ingredients, which is 1:1:1.
For a single serving, the measurements are:
1 ounce (30 ml) Gin
1 ounce (30 ml) Campari
1 ounce (30 ml) Sweet Red Vermouth
To prepare the drink properly for your guests:
First, combine the gin, Campari, and sweet vermouth in a mixing glass or directly into a rocks glass filled with ice.
Second, stir gently for approximately 20 to 30 seconds. A Negroni is always stirred, never shaken. Stirring chills the drink smoothly while adding just enough water dilution to open up the botanicals and soften the bitterness.
Finally, strain over fresh ice (a single large ice cube works best to prevent rapid dilution) in an Old Fashioned glass. Garnish by expressing the oils from a fresh orange peel over the top and dropping it into the glass, or use a fresh orange slice.
This classic preparation is very reliable and offers a wonderful balance of botanical, bitter, and sweet notes for your company.