How to Reseal a Wine Bottle: Stoppers, Pumps and Gas Sprays

The best way to reseal a wine bottle is the tightest seal it will take plus the fridge, whatever its colour.

How to Reseal a Wine Bottle, in One Paragraph

To reseal a wine bottle, match the closure to the bottle, cut the air, then chill it. A screw cap goes back on, a corked still wine gets its cork or a silicone stopper, and sparkling wine gets a clamp. The enemy is oxidation (oxygen flattening the wine's fruit and colour). A vacuum pump removes some of the air. An inert gas spray covers the wine with argon, which is 38% denser than air. A smaller bottle filled to the neck removes almost all of it for free. Every opened bottle then goes upright into the fridge, because reaction speed in wine roughly doubles with each 10°C of warmth.

Which Reseal Fits Your Bottle?

The space between the wine and the closure is called headspace, and it grows with every glass poured, so a half-empty bottle needs more help than a full one before a white skin of yeast forms on the surface.

Your bottle	Best reseal	What it fixes	Do this tonight
Screw-cap still wine	The original cap	Blocks new air almost as well as at the winery	Screw it tight, stand it in the fridge
Corked still wine, over half full	Silicone stopper or the original cork	Blocks new air; the cork seals less tightly	Cork in stained end first, then fridge
Corked still wine, under half full	Smaller bottle filled to the neck	Removes the headspace air itself	Pour into a clean half-bottle and close it
Still wine you will keep several nights	Stopper plus a gas spray	Covers the surface with heavy inert gas	One short burst, close fast, fridge
Sparkling wine	Clamp sparkling stopper	Holds the gas pressure in	Clamp it on and chill it at once
Fortified wine (Port, Sherry, Madeira)	Its own cork or stopper	Mostly sturdy; Fino and Manzanilla Sherry fade like white wine	Recork it and keep it cool and upright

How long wine lasts after opening gives each style's window in days.

Quick check

One question on what you just read

Half a bottle of Prosecco is left tonight. What keeps it fizzy until tomorrow?

AA teaspoon hung in the neckBA vacuum pump on the bottleCA clamp stopper, then the fridge

Tap an answer to see how you did.

Why Does an Open Bottle Need Resealing at All?

Oxygen attacks the phenolics, the grape compounds behind red wine's colour and grip, and flattens colour, aroma and fruit for as long as air reaches the wine. A second reaction turns some alcohol into acetaldehyde, which smells of bruised apple. Above roughly 100 to 125 milligrams per litre, it tastes sour, green-appley and metallic.

Winemakers slow this with sulfur dioxide, a preservative, but oxidation carries on after bottling and speeds up once the cork is out. A reseal cannot undo the damage. It slows the next round by cutting the air or the temperature. If a reopened wine already smells of bruised apple, cook with it. The guide to oxidized wine shows the end point.

Watch0:25

Can You Put the Cork Back in the Bottle?

Yes. Push it back in stained end first. A used cork seals worse than it did at the winery, but for a bottle you will finish tomorrow, a well-seated cork plus the fridge is enough.

Each cork differs: a 2005 closure study found that 45% of corks leaked gas under pressure testing, through their sides and through the cork itself.

The corkscrew leaves a spiral hole, and the wet end has swollen. Stained end first keeps the clean top away from the wine. Twist gently as you push, and stop once it feels firm.

If the cork will not go past halfway, switch to a silicone or rubber stopper. It costs little, fits almost any neck and seals more evenly than a squashed cork. Plastic wrap held tight with a rubber band works for one night. A cork pulled cleanly, as the guide to opening wine shows, goes back in more easily.

What If the Bottle Has a Screw Cap?

Screw it back on firmly. The metal cap and its liner were never squashed or pierced, so it reseals almost as well as it sealed the first time. It still needs the fridge, because the air already inside keeps reacting. The screw cap vs cork comparison explains which wines use each closure.

Does a Wine Vacuum Pump Actually Work?

A little, for still wine. The pump sits on a rubber stopper with a one-way valve, and each stroke pulls out part of the headspace air, so less oxygen is left to react with the wine.

A household pump makes only a partial vacuum, the wine still holds dissolved oxygen, and the rubber seal can let air creep back in. Pump until you feel firm resistance. Never pump sparkling wine: lower pressure pulls its dissolved gas out, so it goes flat sooner.

If you will finish the bottle within a night or two, a pump plus the fridge is enough. If the bottle is under half full, move the wine into a smaller bottle instead.

How Do Gas Sprays Keep Wine Fresh?

They lay heavy inert gas (a gas that does not react with the wine) over the surface, so oxygen cannot reach it. Most sprays use argon and/or nitrogen. Argon is 38% denser than air, so it sinks into the neck and settles on the wine like a lid. Food packaging uses argon the same way, to push oxygen out.

Hold the nozzle just inside the neck and spray one short burst. Close the bottle straight away and move it gently, because shaking mixes the gas back into the air. A short burst only blankets the surface, so it works best on bottles still at least half full.

If you often keep good whites or lighter reds for several nights, a gas spray is the upgrade to make. The comparison of wine preservation tools sets pumps, sprays and needle systems side by side by cost.

Are Needle-and-Argon Systems Worth It at Home?

Only if you drink one glass at a time from bottles you would hate to lose. A hollow needle goes through the cork, argon pushes the wine out through it, and the cork closes back up when the needle comes out. No fresh air gets in, so the rest of the bottle stays almost as it was.

The device and its gas capsules cost far more than any stopper, and the classic design needs a natural cork to pierce. If you finish bottles within two nights, skip it. If you like one glass of something special across several weeks, it is the only tool that pours without opening the bottle.

How Do You Reseal Sparkling Wine?

Clamp a sparkling stopper on the bottle and chill it. With fizz, the aim is to stop gas leaving, not to stop oxygen entering. Carbonation (the carbon dioxide dissolved in the wine) escapes through the open surface, so the seal has to hold pressure.

The stopper's two metal wings lock under the lip, so the pressure inside cannot push it out. A regular cork or rubber stopper cannot hold it. The famous spoon in the neck does nothing.

A poured glass loses its gas much faster than the open bottle, so fill glasses only as they are drunk and clamp the bottle between pours. If you have no clamp stopper, finish the bottle tonight. Sparkling wine types explains why some styles hold their bubbles better.

Should You Refrigerate Opened Wine, Even Red?

Yes, refrigerate every opened wine, reds included. The rate of chemical reactions in wine roughly doubles with every 10°C rise. A fridge is well over 10°C colder than a warm kitchen, so oxidation runs at less than half its counter speed.

Stand the bottle upright. Lying down, the wine spreads along the side and a much larger surface meets the headspace air. Upright, only the narrow circle in the neck does.

Fridges do dry out corks, but on sealed bottles kept for months, which how to store wine at home covers. An opened bottle kept a few days faces no such risk.

The wine serving temperature chart gives the target range for each style.

How Do You Reseal Wine Without Any Gadgets?

Pour the leftover into a smaller bottle filled to the neck, close it, and chill it. This removes the headspace itself instead of pumping or covering it. A clean half-bottle with a screw cap is ideal.

Rinse it with hot water and let it dry first, since leftover soap or old wine taints the wine. Pour slowly down the side through a funnel, because splashing mixes in fresh air. If the leftover will not fill a small container, finish the glass or keep it for cooking.

Most fortified wines (spirit added, about 20% alcohol) keep far longer once open, and Madeira, with an unusually long open life, needs only a plain cork. Pale Fino and Manzanilla Sherry fade as fast as white wine. The guide on how to taste fortified wine covers the styles.

Reseal Tonight's Bottle

Close tonight's bottle tightly, stand it in the fridge and note how the wine tasted.

The serving and storage hub collects every guide on keeping and pouring wine. Open the Sommy app at sommy.wine tomorrow, photograph the label and taste the glass next to tonight's note.

Sources

1. Wine fault (oxidation, acetaldehyde and sulfur dioxide)
2. Cork (material): the 2005 cork leakage study
3. Sparkling wine: carbonation loss and the spoon myth
4. Storage of wine: temperature and reaction rates
5. Argon: density and oxygen displacement in packaging