Vermouth explained: dry, sweet, bianco and how long it keeps

Regulation (EU) 251/2014, kept in UK law after Brexit, defines vermouth in two steps. First, an aromatised wine is a drink in which wine makes up at least 75% of the volume, which may be sweetened, coloured and fortified with added alcohol, and which leaves the producer between 14.5% and just under 22% actual strength. Then vermouth is the aromatised wine to which alcohol has been added and whose characteristic taste comes from substances of Artemisia species, the wormwoods.

So vermouth sits with wine. Spirit drinks and liqueurs start at 15% and are built on distilled alcohol; vermouth is built on wine, with some spirit added. Most bottles sit at 15 to 18%. The vermouth page in the Field Manual covers the category, and dry vermouth and sweet vermouth each have a page of their own.

The labels show how it is made. Cocchi lists the ingredients of its Vermouth di Torino as wine, sugar, alcohol and an infusion of aromatic herbs and spices. Dolin steeps fifteen botanicals in white wine for its dry vermouth and some 32 for its white, wormwood and gentian among them, and Noilly Prat builds all four of its vermouths on dry white wines steeped with herbs and spices. Sugar, colour and the added alcohol then set the style.

The same regulation lets a label add one of five words for sweetness, each with a sugar band, measured as invert sugar. Extra-dry means under 30 grams a litre. Dry means under 50. Semi-dry runs from 50 to under 90, semi-sweet from 90 to under 130, and sweet means 130 grams or more. An aromatised wine labelled extra-dry or dry must also reach a total strength of at least 15% or 16%.

Bartenders talk about three styles, and only two of them are legal terms. Dry vermouth is pale and herbal, the French style, about 18% on our page and under 50 grams of sugar if the label says dry. Sweet vermouth is red and spiced, the Italian style, about 16%, and at least 130 grams if labelled sweet. Bianco, or blanc, is white but sweet: Dolin describes its white as sweet and aromatic, sweeter than its dry, at 16%. No sugar band is attached to the word bianco, so read the label for the sweetness word.

Old recipes use the countries as shorthand. Italian means sweet red vermouth and French means dry white, which is why gin and Italian means gin and sweet vermouth. Both countries now make every style, so read Italian and French in an old bar book as sweet and dry, not as a place.

Vermouth di Torino has been a protected geographical indication since 22 March 2017, by decree of the Italian agriculture ministry, as the trade title Australian Bartender reported. To carry the name, a vermouth must be made in Piedmont from Italian wine, at 16 to 22%, flavoured mainly with Artemisia absinthium or pontica grown or gathered in Piedmont, and coloured only with caramel. That covers white, amber and red bottles; the red rosso is the one most bars know.

France has its own towns. Dolin has made Vermouth de Chambéry in Savoie since 1821 and says the first white vermouth was made there in 1881. Noilly Prat, in Marseillan on the Mediterranean coast, makes only vermouths built on dry white wine. These are reference points, not a ranking: the style on the label matters more than the town.

Cocchi’s instruction on its Vermouth di Torino is to keep the bottle chilled once open and drink it within a month; its dry asks for a cool place and a month at most. Our own rule is three to four weeks in the fridge. Vermouth at 15 to 18% has too little alcohol to stop air working on the wine, so an open bottle oxidises the way white wine does, only more slowly, and cold slows it further.

It fades rather than spoils. The herbs and fruit dull first, then a sour, papery note creeps in, and a bottle left warm gets there in about half the time. It does not turn harmful, only flat. Sealed, in a cool dark cupboard, a bottle lasts far longer.

Three habits keep it fresh. Cap it tightly, with a bottle stopper if the cork is tired, and keep it in the fridge door. Write the opening date on the label. Buy the size you will finish in a month: Dolin, for one, sells its vermouths in 37.5cl bottles as well as 75cl. A dry vermouth too tired to drink still deglazes a pan. What a tired bottle does to a Martini is in the gin and vermouth drinks.

The Martini, the Gin and It and the Negroni family have their own guide, Martini, Negroni and the gin and vermouth drinks, and the Americano and Milano-Torino sit on the aperitivo ladder. The table covers the rest of the vermouth drinks on our pages.

Sweet vermouth’s vanilla, dried fruit and spice round out a whiskey. Our Manhattan is two parts vermouth to five of rye, and the Rob Roy makes the same drink with Scotch. The Tipperary, the IBA’s measures, adds green Chartreuse to Irish whiskey and sweet vermouth.

Dry vermouth’s herbs and wine acidity suit lighter bases. The Bamboo and the Adonis hold no spirit at all, only sherry and vermouth, dry in the first and sweet in the second. In the Chrysanthemum the vermouth is two thirds of the glass, so its freshness decides the drink. The El Presidente, Metropole and Brooklyn carry dry vermouth with rum, cognac and rye.

Every drink in the table goes into a mixing glass with a good fill of cubed ice, gets 20 to 30 seconds of stirring, and is strained into a chilled glass such as a Nick & Nora. Shaken or stirred explains why.

A recipe that names a style means it. A Martini or a Bamboo written for dry vermouth turns soft and sweet if bianco goes in, because a bianco carries far more sugar than the legal ceiling for dry. A Manhattan written for sweet vermouth turns thin and sharp with dry. Where a recipe splits the measure between sweet and dry, as the split Rob Roy on our page does with 15ml of each, it wants the sugar of one and the herbs of the other.

Within a style, bottles still differ. The Field Manual’s Manhattan page suggests a richer Torino rosso, because there is enough whiskey to carry its vanilla and dried fruit. Dry vermouths run from Dolin’s at 17.5% to Cocchi’s at 18%, and an extra-dry bottle gives a leaner, sharper drink for anyone who likes theirs very dry. Taste a new bottle cold, on ice, before it goes into a drink: one sip shows whether it leans sweet, bitter or herbal, and how much of it the drink can take.

A vermouth drunk on its own is an aperitif at wine strength. Serve dry vermouth very cold on ice with a strip of lemon peel, and top it with soda for a longer glass; 50ml at 18% is about 0.9 UK units. Cocchi suggests its Vermouth di Torino with tonic. Dolin serves its white on the rocks, or with a fruit liqueur in the Chambéry-cassis tradition.

The regulation has a second family beside vermouth: bitter aromatised wines, where the bitterness rather than wormwood leads. A quinquina wine takes its main flavour from natural quinine, and an Americano is flavoured with wormwood and gentian and coloured yellow or red. These bottles keep like vermouth, chilled and within about a month.

Lillet Blanc is a French aperitif wine from Podensac, south of Bordeaux, by Wikipedia’s account, and the IBA puts 30ml of it into a Corpse Reviver No. 2. Cocchi Americano, created in 1891 and 16.5% by its maker’s account, is bittered with gentian, wormwood, cinchona bark and bitter orange peel. Kina Lillet, the earlier Lillet, was reformulated in 1986 and sold from then on as Lillet Blanc; Difford’s Guide says its quinine was cut and DrinkBoy says it was not. Its page tells the story, and Cocchi Americano is the usual choice for a more bitter, quinine-led reading.

The vermouth definition comes from Article 3 and the second annex of Regulation (EU) 251/2014 as retained in UK law, and the sugar terms are its Article 6, all read on legislation.gov.uk on 12 October 2026. The Vermouth di Torino rules follow the decree as reported in April 2017. The keeping time is Cocchi’s, and the styles follow the producers’ own product pages, checked the same day.