How to serve a canned cocktail: cold, glass, ice, garnish and keeping

Food Republic’s account of canning cocktails says the liquid has to be cold for carbon dioxide to dissolve in it. A can chilled all the way through starts from the temperature at which the gas was put in.

Cold also saves the ice. The highball glass page makes the point about a warm tonic: the ice is asked to chill the mixer and also keep the drink cold, and manages neither. A warm can poured over ice puts the same load on the ice. Chill the can in the fridge until it is cold to the touch, and open it close to where you will drink it.

At a picnic, keep the cans in a cool bag with a water bottle frozen overnight, as the picnic section of the summer cocktails guide does. The bottle is drinkable once it thaws.

Drinking from the can is the simplest way to serve it, and the can stays sealed until the moment it is opened. A glass gives you ice, a garnish and the smell of the drink. The curve at the rim of a copa glass keeps the smell of the spirit and the garnish over the drink as you sip.

Open the can still, without shaking it. Pour down the inside wall of a tilted glass, a little at a time, and stir once at most. Our highball page explains why: a mixer angled against the side keeps most of its gas, and a mixer sent into the middle of the drink drives much of it off. A can loses a little gas to the pour whatever you do, so pour at once and drink while the drink is cold.

The label names a drink, and the Field Manual recipe for that drink names the glass, the ice and the garnish.

The Gin and Tonic, Whisky and Cola and Paloma are built over ice in tall glasses, and the Aperol Spritz goes in a large wine glass. The Negroni and the Old Fashioned go in a rocks glass. The glassware guide covers which glass suits which drink.

Thin ice is the usual mistake. A handful of cubes in a tall glass gives way to the warm glass, melts quickly and leave a drink both warm and thin, while ice packed to the rim stays solid longer. A carbonated can poured over a handful of cubes goes flat and warm for the same reason. Fill the glass with ice first, then pour.

A rocks glass wants large, cold, dry cubes, because small or wet ones melt quickly and the drink is thin by halfway. An ice bucket keeps cubes dry through an evening, and ice tongs set a large cube into the glass without a splash.

A can has no lime wedge. The squeezed wedge on a Gin and Tonic or a Whisky and Cola puts a fresh, sharp edge on a drink that otherwise has none, and the Whisky and Cola page says the drink has no sharp edge without it. Canned cocktail or homemade sets that fresh citrus against what a sealed can offers.

Orange peel for a Negroni or an Old Fashioned is cut as a wide strip, expressed over the drink and left in the glass. The Paloma takes a grapefruit slice and a lime wheel, with half the rim salted so each sip can be sweeter or sharper. Cut the garnish on the day.

A bottled stirred cocktail is a spirit-strength drink. The Field Manual Negroni pours gin, Campari and sweet vermouth in equal 30ml measures, which is 90ml before the stir adds water, at about 27% ABV and 2.4 UK units. A bottled one gives its strength on the label, and the NHS sum turns a pour into units: a 90ml pour at 20% ABV is 1.8 units. Pour it over large, cold ice in a rocks glass.

Keeping time is a matter for the label. Its storage line is the producer’s word for that bottle, and nothing here can stand in for it, because bottles differ. Annex X of Regulation (EU) No 1169/2011 exempts a drink of 10% ABV or more from carrying a date at all, so a bottle with no date can still be old. Read the storage line and follow it.

Opened, a bottled cocktail goes in the fridge unless the label says otherwise. Our sweet vermouth page keeps an opened bottle in the fridge door for about three or four weeks, and vermouth is a third of a Negroni. Anything with citrus ages faster, because our lime juice page says to use juiced lime the same day. A bottle stopper slows an open bottle going stale and does not stop it.

The home version follows the freezer-bottle section of how to batch cocktails: a citrus-free stirred drink, cold water added first at about a fifth of the batch, and three hours or more in the freezer. It pours straight into a chilled glass, with no ice and no stirring. You can work out its strength as well: a batch of four Negronis holds four times the 90ml of spirit and vermouth, at 360ml and about 9.7 units before the water goes in.

The freezer suits the strongest batches. Batches heavy in vermouth or liqueur are lower in alcohol and can go to slush, so they stay in the fridge. Write the drink and the date on the bottle.

The hip flask page keeps the flask for spirit of around 40% ABV, filled for the day, and says from experience that sugar turns a premixed cocktail stale and sticky in a neck that cannot be scrubbed. A sealed can needs no flask. It needs a cool bag and a frozen water bottle. The units sum still applies on a picnic: a can of 330ml at 4% ABV comes to 1.3 units, and the label gives the figures.

For a cold evening, bonfire night drinks puts hot drinks in vacuum flasks. The wider field is set out in what a ready-to-drink cocktail is, and the label is read in how to read an RTD can.