Stirred Art
App of the Day
from the creators of 
murmur
Layered
What the tests found
America's Test Kitchen kept open bottles of two dry vermouths in a pantry and in a fridge, and tasted them every other week.
- In the pantry: after a month, most tasters found the vermouth had lost its citrus aroma and tasted flat.
- In the fridge: it stayed good for sipping for two months, then began to taste medicinal and somewhat bitter.
Their advice for cocktails is the fridge, for no longer than two months. VinePair is stricter and gives an open bottle about two weeks at its freshest and about a month in all.
So: always the fridge, a month to be safe, two at the outside.
Why it fades
Vermouth is made from wine, and it spoils the way wine does. Cold slows the loss of its aromas, and the dark of a fridge slows oxidation.
A bottle lasts longer than it stays good
Sweet vermouth is in 19 of the 121 recipes on this site and dry vermouth in 14, but each drink takes little. A Martini here uses ½ oz of dry vermouth, and a Negroni or a Manhattan uses 1 oz of sweet.
A 750 ml bottle holds about 25 oz, which is 50 Martinis. At two Martinis a week it would last about six months, three times longer than it stays good. Buy the smallest bottle you can find.
Use it up
- Make the drinks that take a lot of it. The Fifty-Fifty is half dry vermouth, and the Adonis is half sweet.
- Pour an Americano: sweet vermouth, Campari and soda water.
- Cook with what's left. Dry vermouth past its best for a Martini still works in a pan sauce or a risotto.
What can stay on the shelf
Campari and Aperol are made from spirits, so they keep on the shelf like gin or whiskey. A wine-based amaro, which usually says so on the label, goes in the fridge with the vermouth.
Running low beats going flat
Stirred Art flags the bottles that are running low, in My Bar and in a home-screen widget. With vermouth, that's the nudge to finish the bottle and buy a fresh one.
Sources
- America's Test Kitchen: What's the shelf life of dry vermouth?
- VinePair: Does amaro or vermouth have to be refrigerated?
Read on 11 November 2026.
Updated 11 November 2026.
Questions
Does vermouth need to be refrigerated after opening?
Yes. In America's Test Kitchen's test, open bottles kept in a pantry had lost their aroma and tasted flat after a month. The bottles kept in the fridge stayed good for two months.
How long does vermouth last once opened?
In the fridge, one to two months for cocktails. America's Test Kitchen says no longer than two months. VinePair is stricter: about two weeks at its freshest and about a month in all.
How can I tell if vermouth has gone off?
It loses its aroma and tastes flat first. Left longer, the tasters at America's Test Kitchen found it medicinal and somewhat bitter.
Can I cook with old vermouth?
Yes. America's Test Kitchen found that dry vermouth stored at room temperature for months still made an acceptable pan sauce or risotto.
Do Campari and Aperol need to go in the fridge?
No. They are made from spirits and can stay on the shelf with your other bottles. A wine-based amaro goes in the fridge, like vermouth.
Read next