Frozen Negroni

Before you start

A Negroni is around 25 percent alcohol before dilution, and alcohol lowers the freezing point so much that a home freezer at about -18°C (0°F) will never turn it into slush. The answer is to dilute and sweeten it in a controlled way. This original blender method adds orange juice, a little syrup and measured ice, bringing the strength down enough to form fine, scoopable ice crystals while keeping the bitter, orangey character of the classic.

Sugar matters as much as water. Cold numbs sweetness and bitterness both, so a frozen drink needs slightly more sugar to taste balanced, and the sugar also keeps the texture soft rather than icy. Chill the spirits beforehand so the ice does not melt before it is blended.

Ingredients

• 45 ml (1½ oz) London dry gin — freezer-chilled
• 45 ml (1½ oz) Campari — freezer-chilled
• 45 ml (1½ oz) sweet vermouth — well chilled
• 45 ml (1½ oz) fresh orange juice — strained
• 15 ml (½ oz) simple syrup (1:1)
• 300 g (about 2 cups) ice cubes — small cubes blend more evenly
• 2 thin orange half-wheels — garnish

Method

1. Place the gin, Campari and serving glasses in the freezer for about an hour. Keep the vermouth in the refrigerator.
2. Weigh the ice; volume measurements vary a lot depending on cube size. Put the ice in the blender jar.
3. Pour in the gin, Campari, vermouth, orange juice and simple syrup.
4. Blend on low for 10 seconds, then on high for 30 to 40 seconds until the mixture is smooth and pale red, with no audible chunks. Stop and push the ice down with a spatula if it bridges.
5. Check the texture: it should mound on a spoon and slowly settle. If it is runny, add a few more cubes and blend again; if it is too stiff to pour, add 10 ml of orange juice.
6. Divide between the chilled glasses and garnish each with an orange half-wheel. Serve with a short straw or spoon.

Tips for success

• A small amount of sugar helps texture, so do not skip the syrup even if you like a dry Negroni.
• For a party, blend a batch and hold it in the freezer in a covered container for up to an hour. Re-blend briefly before serving, since it will separate.
• If you own a slushie machine, follow its manufacturer's guidance; most need the mix to be well below spirit strength, so dilute with juice and water before freezing.

Substitutions

Orange juice

Blood orange juice gives deeper color and berry notes. Water works but makes a sharper, more bitter slush; add 5 ml more syrup.

Campari

Aperol makes a lighter, sweeter frozen drink with about half the alcohol from the bitter element. Cut the syrup to 5 ml.

Sweet vermouth

A vanilla-rich vermouth gives a creamier finish. Lighter styles keep the slush bright and fresh.

Variations

Frozen Boulevardier

Swap the gin for bourbon and the orange juice for 30 ml water plus 15 ml orange juice.

Troubleshooting

It stays liquid

The spirits were warm or the ice was too little. Add more ice by weight, and pre-chill the bottles next time.

It is chunky and icy

The blender ran too briefly or the cubes were large. Blend longer on high, or use smaller cubes.

It tastes flat and bitter

Cold suppresses sweetness. Add 5 ml syrup and blend for a few seconds.

Storage

Serve as soon as it is blended; frozen drinks begin to separate within minutes. A blended batch can sit covered in the freezer for up to about an hour before re-blending. Keep opened vermouth refrigerated.

Safety notes

The batch contains 45 ml each of 40% gin, 24% Campari and 16% vermouth, about 2 U.S. standard drinks in total or about 1 per glass (one standard drink is roughly 14 g of pure alcohol). Frozen drinks go down quickly. For adults of legal drinking age only; never drink and drive.