Wine Basics / Serve, Store & Taste

Caroline Gilby - How long can I keep a bottle of wine once it's been opened?

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Caroline Gilby Caroline Gilby / 22 May 2019

Caroline Gilby MW discovers how long a bottle of wine will really last once it's been uncorked.

The problem with keeping wine once it's been opened is that oxygen in air is the enemy of wine – especially to fresh and fruity flavours. So two to three days is the realistic maximum for most wines to still remain pleasantly drinkable, though it does depend a little bit on the style of wine.

And it's important to note that even if it doesn't still taste nice, wine that has gone past its best still won't do you any harm. Putting wine in the fridge (whether it's red, pink or white) can slow down the oxidation reactions, but bear in mind the oxygen is actually more soluble in cold wine.

One handy solution is to decant into a smaller bottle and seal tightly to reduce the airspace and thus oxygen in contact with the wine. There are also various technological solutions that replace the air in the bottle with an inert gas such as nitrogen or argon.

There are some wines where exposure to oxygen is part of the winemaking style – wines that have undergone long cask ageing for instance. Wines like Madeira, oloroso sherry, or tawny Port fit into this category and can be kept open for weeks (or even months in the case of Madeira). Still grandma's sherry kept from one Christmas to the next is to be avoided.

Madeira, oloroso sherry, or tawny Port can be kept open for weeks.
Madeira, oloroso sherry, or tawny Port can be kept open for weeks.

Tawny Port is very nice kept in the fridge for a cool aperitif too. Basically it's trial and error, so if your wine smells of vinegar, sherry (and it's not actually sherry) or nail polish then you know it's gone past its best.

Leftover wine can go into cooking, provided it's not too far gone (cooking will concentrate bad flavours) or another solution for leftover wine is to freeze it in ice cube trays to cook with at a later date.

With sparkling wines, that old wives' tale of putting a teaspoon in the top of the bottle is just that. Experiments have shown that it makes no difference at all. In fact sparkling wine does retain quite a lot of fizz for several days after opening anyway, which may be where the rumour comes from. The best thing to do is to keep the wine cold so the carbon dioxide stays dissolved in the wine as much as possible and to seal it with a special Champagne stopper to stop too much carbon dioxide escaping into the wider atmosphere. But who has leftover sparkling wine anyway?

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Caroline Gilby is a Master of Wine and a scientist by training. She is a wine writer with a passion for the wines of Central and Eastern Europe and contributes to several wine books, magazines and websites.


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Members' Comments (2)

"In her article about resealing opened wine bottles, Caroline Gilby does not mention the popular wine bottle vacuum pump. I've successfully used the same one for many years. They do the job and are very easy to use. They cost under £10 and come with two or more stoppers that work with the pump. Why no mention? Do they spoil the wine in any way? It does seem a logical solution.

Gareth Jacobs - Musselburgh, Scotland"

Mr Gareth Jacobs (01-Jun-2019)

"Thanks for your comment. I have to agree with you that I find the Vacu-vins essential kit at home and use them all the time! Caroline as a scientist and Master of Wine, with a highly trained palate has much more stringent requirements, saying that the seal is not perfectly hermetic and doesn’t create a total vacuum. She also says that she is sensitive to the lowest levels of oxidation, whereas not everyone is."

Joanna Goodman - News & Content Editor (08-Jul-2019)

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