Can Wine Go Bad? How Likely, Not Whether

Yes, wine can go bad, and the likelihood is high once the cork or cap is off: Healthline’s medically reviewed guide, updated 3 August 2026, puts opened sparkling wine at 1–2 days, light white and rosé at 4–5 days, rich white at 3–5 days, red wine at 3–6 days, dessert wine at 3–7 days, and Port at 1–3 weeks when sealed and refrigerated, while an unopened bottle held at the constant 10–15°C (50–59°F) Jancis Robinson recommends in The Oxford Companion to Wine can last years. A sharp vinegar smell in drinking wine is volatile acidity, which Commission Delegated Regulation (EU) 2019/934 caps at 18 milliequivalents per litre for white and rosé and 20 milliequivalents per litre for red; wine vinegar under EU Regulation 1308/2013 must contain at least 60 grams of acetic acid per litre.

I buy the lunch offer for a supermarket chain from an office in Leeds. Wine sits beside sandwiches because the till says they travel together. Pairings sell, or they sit. A leftover bottle is the same question: will someone finish it, or will it occupy the fridge door?

What should I note about storage and opening dates before judging a bottle?

Write eight facts before you condemn a bottle: vintage year, bottling lot, date opened, storage temperature, days since opening, fill-level distance, alcohol by volume, and the sulphite statement.

The vintage year is the harvest year. Commission Delegated Regulation (EU) 2019/33, Article 49, lets that year appear when at least 85% of the grapes were harvested then. In the United States, 27 CFR 4.27 uses 85% for most appellations and 95% when a viticultural-area name is on the label.

The bottling date is rarely a calendar line. Directive 2011/91/EU requires a lot mark, preceded by L unless the code is already obvious. The UK Food Standards Agency still-wine labelling guide says that number is usually prefixed with L and followed by figures for the date and time of production.

The date opened is the one you write on the glass. Then count days since opening against Healthline’s windows. “Sometime last week” is not a measurement.

Storage temperature decides how fast the chemistry runs. Robinson’s 10–15°C band is the cellar figure. Karen MacNeil, in The Wine Bible, puts long-term storage near 55°F (13°C). Purdue Enology Professor Christian Butzke’s Wine Storage Guidelines (FS-58-W) sets long-term storage at 10–16°C (50–60°F), allows 1–4 weeks at 24°C (75°F) or below, allows spikes of 30 minutes or less at 29°C (85°F) or below, and says wine should never see 30°C (86°F) or above.

Fill-level distance is the air gap between wine and cork (ullage). The Oxford Companion to Wine says most wineries aim for 5–10 mm at bottling. Dirceu Vianna Junior MW, in Decanter, put the producer target at 3–10 mm. Michael Broadbent’s auction guide treats 0.3 cm as normal in a young wine, 1.5 cm (top of the shoulders) as acceptable past 15 years, 3–3.5 cm as an oxidation risk, and 6–7 cm as possibly undrinkable.

Alcohol by volume is a legal line. Regulation (EU) 1308/2013 sets still wine at a minimum 8.5% vol in wine-growing zones A and B and 9% vol elsewhere, with a usual total-strength ceiling of 15% vol. The TTB covers wine from 7% to 24% ABV (27 CFR 4.6). Under 27 CFR 4.36, a label at 14% or less may sit 1.5 points either side of the stated figure; above 14% the tolerance is 1 point. Port sits higher, which is why its opened window is weeks.

Sulphite level is a preservative, not a freshness stamp. TTB rule 27 CFR 4.32(e) requires “Contains sulfites” when total sulfur dioxide is 10 ppm or more. 27 CFR 4.22(b)(1) caps finished wine at 350 ppm. EU 2019/934 Part B limits total sulphur dioxide to 150 mg/L in dry red and 200 mg/L in dry white and rosé. A UK back label usually says “contains sulphites.”

How does an unopened bottle differ from opened wine exposed to oxygen?

An unopened bottle fails slowly, and usually only if heat, light, a dried cork, or a low fill has already let air in. Opened wine changes the moment the closure leaves: oxygen fills the headspace, fruit goes flat, and acetic acid bacteria get the air they need. Wine bad after opening is a days problem. Does unopened wine expire? Only when storage has already failed. Opened wine shelf life is the Healthline table below, for bottles recorked and kept cold.

| Wine type (opened, sealed, refrigerated) | Healthline window | |---|---| | Sparkling | 1–2 days | | Light white and rosé | 4–5 days | | Rich white | 3–5 days | | Red wine | 3–6 days | | Dessert wine | 3–7 days | | Port | 1–3 weeks |

Those are quality windows. Healthline still tells readers to discard wine that smells of vinegar, garlic, cabbage, or burnt rubber.

Does red wine go bad unopened? It can, when a cupboard runs at 25°C, a clear bottle stands in a window, or ullage has already dropped to mid-shoulder on a young wine. The same red can sit for years if the cork stays wet, the fill stays in the neck, and the room stays in Butzke’s 10–16°C band.

Screw-cap bottles can stand upright because the cap does not dry like a cork. Natural cork still wants contact with wine for long storage, which is why racks lie bottles on their side. Once opened, stand leftovers upright so less wine surface meets the air.

Which closure, heat, light, storage, and handling conditions cause a wine to lose quality?

Heat makes quality loss most likely. Butzke’s table is blunt: never 30°C or above; 24°C is a weeks-scale ceiling. Oxford notes that long spells above 25°C (77°F) can leave raisin or stewed-fruit flavours. A cork past the rim or sticky seepage under the capsule is the receipt of a hot van. Purdue’s cold table says never take wine to −5°C (23°F) or below. At 12% ABV, Butzke puts the freezing point near 23°F. A kitchen fridge at about 4°C will not freeze table wine. A freezer can push the cork or split the glass.

Light is quieter, especially for white, rosé, and sparkling wine in flint (clear) glass. A 2022 Proceedings of the National Academy of Sciences study of 1,052 bottles across 24 white wines found that seven days of typical supermarket-shelf light in flint glass cut terpenes by 10–30% and norisoprenoids by 30–70%, while coloured glass showed no such collapse after 50 days. Lightstruck wine smells of cooked cabbage or wet wool.

A crumbly, stained, or pushed cork, a broken screw-cap thread, or a weeping capsule lets oxygen in at any vintage. Purdue’s cork-quality note (FS-55-W) recalled a mid-1990s cork-taint rate of 3–5% of bottles, driven largely by 2,4,6-trichloroanisole, and set a practical target below 1.5%. Cork taint smells of damp cardboard. Vibration on a washing machine, a bottle in a sunny car, and fridge-to-table swings all raise the odds. A clean half-bottle, filled high and recorked, leaves less headspace than a wide decanter.

How can I inspect fill level, closure, colour, aroma, and taste without mistaking one clue for a verdict?

How to tell if wine has gone bad is a sequence. One brown edge in an old red can be age. The same brown in last year’s pale white, plus a sherry-like smell, is oxidation.

1. Record vintage, lot code, stated ABV, the sulphite line, and the date you open the bottle.
2. Hold the bottle to the light and measure fill: in the neck for a young wine; top-shoulder only if the wine is old enough for Broadbent’s 1.5 cm allowance. Check the capsule for seepage and the cork for push-out.
3. Pour a small measure. Look at colour against white paper: unexpected brown in a young red, gold-to-amber in a wine sold as pale, haze, a film, or bubbles in a still wine.
4. Smell, then taste a sip. Nutty, bruised-apple notes point to oxidation. Vinegar or nail-polish remover point to volatile acidity and ethyl acetate. Damp cardboard points to TCA. Cooked cabbage in a clear-bottle white points to lightstrike. Stewed fruit plus a pushed cork points to heat.

A single clue is a flag. Two clues that agree are a decision. A low fill on a 30-year-old Bordeaux is expected; a low fill on a 2024 Pinot Grigio is not. White crystals on a chilled white are potassium bitartrate, the “wine diamonds” in Purdue’s cold-stability note, not spoilage. If the sip is sour in the vinegar sense, stop. If it is merely tired, it may still deglaze a pan the same evening.

The wine already smells flat, vinegary, or stale — is it fixable, usable for cooking, or best discarded?

A vinegar smell in drinking wine is not a starter for homemade vinegar. EU 2019/934’s volatile-acidity ceiling for white wine is 18 milliequivalents per litre, which wine laboratories convert to 1.08 g/L acetic acid (milliequivalent mass 60.05 mg). Red wine’s ceiling is 20 milliequivalents, or 1.20 g/L. Wine vinegar, under Regulation 1308/2013 Annex VII, must reach at least 60 g/L acetic acid by acetous fermentation of wine. Sixty grams is more than fifty times the white-wine legal cap. You cannot finish that conversion on the draining board. Several EU national vinegar rules also cap residual alcohol in wine vinegar at 1.5% vol.

| What you have | Acidity | What to do | |---|---|---| | Sound leftover, fruit fading | Below the 1.08–1.20 g/L VA ceilings | Drink within Healthline’s window, or cook the same day | | Oxidised (nutty, bruised apple, flat fruit) | May still be legal as wine | Cooking is reasonable if there is no vinegar bite and no mould | | Volatile-acidity fault (vinegar, nail-polish remover) | Near or past the 2019/934 caps | Pour away; do not stew food with it | | Wine vinegar (the grocery product) | At least 60 g/L acetic acid; about 1.5% vol residual alcohol | Use labelled vinegar | | Heat-damaged (“cooked”) wine | Not an acidity problem | Dull, stewed; poor drinking, poor cooking | | Cork-tainted wine | TCA, not acetic acid | Damp cardboard; discard |

A vacuum pump will not reverse acetobacter. A flat red that still smells of wine can go into a stew that night. A sharply vinegary leftover cannot. Use labelled wine vinegar when you want vinegar; the acidity is printed. Stale is the middle case: fruit gone, no vinegar. Healthline’s red window of 3–6 days is when that staleness becomes likely in the fridge. If you cannot name the date opened, treat the bottle as past the window.

When should I avoid serving a bottle because of packaging, contamination, or its condition?

Do not serve from a bottle whose closure has failed in a way you can see: cork pushed out, capsule weeping, screw cap cross-threaded, bag-in-box swollen or leaking, glass cracked. Fruit flies around an open neck are a reason to stop pouring.

Skip the glass if you see a film, unexpected fizz in a still wine, or sludge that does not match the fine sediment of an old red. Mould on the cork face is a stop when the wine also smells musty. Crystals without mould are still tartrate. Heat evidence plus a stewed smell is enough to keep a bottle off a table. If anyone at the table has a sulphite sensitivity, the 10 ppm labelling threshold is the only consumer-facing number you have. A bottle that smells of vinegar, nail polish, wet cardboard, cooked cabbage, or garlic-and-rubber belongs in the sink.

What would a long-term wine-storage routine look like for ordinary bottles and special bottles?

Ordinary bottles on my fixture are this year’s vintage, often under screw cap, priced to drink with lunch. Keep them in the coolest dark cupboard you have, away from the oven, and open them within months. Standing a screw-cap bottle upright is fine. If the only cool place is the kitchen fridge, use it for weeks, not years: the air is dry, near 4°C, and a long stay can dry a natural cork. Purdue’s long-term band is 10–16°C.

The leftover question people type as wine go bad in fridge is two clocks. Opened wine still fades on Healthline’s days. Unopened wine in a working fridge will not freeze at 12% ABV, yet years of cork storage belong in a cool cupboard, not the salad drawer.

Special bottles — a gift with a real cork, a Reserva, anything you might still want in three years — need the Robinson, MacNeil, and Butzke numbers as a routine. Dark. Steady. About 13°C if you can get it. Horizontal for cork. A cardboard case in an interior cupboard beats a rack in a sunlit dining room. Check fill once or twice a year: a young wine already down toward the shoulder has a storage story you will not fix by waiting.

Opened leftovers follow one drill. Recork. Stand upright. Fridge, including red. Count days against the table. Port can wait a couple of weeks; Prosecco cannot. Write the opened date. If the smell has gone to vinegar, stop.

I once put a mackerel sandwich beside an elderflower drink and watched the drink’s sales fall for six weeks. Leftover wine is the same line: it either still belongs next to food, or it has become a fault you should not serve or relabel as vinegar.

Frequently asked questions

Does unopened wine expire?

Unopened wine carries no use-by date on a standard bottle. The vintage is the harvest year, and EU 2019/33 lets that year appear when at least 85% of the grapes come from it. Heat above 30°C, light in flint glass, or a fill that has left the neck raise the odds of failure. Smell and taste decide.

How can I tell if wine has gone bad?

Check fill and closure first, then colour, then smell, then a small sip. Vinegar or nail-polish aromas are volatile acidity. Nutty, bruised-apple dullness is oxidation. Damp cardboard is cork taint. Cooked cabbage in a clear-bottle white is often lightstrike. Two agreeing clues beat one odd colour on its own.

Does red wine go bad unopened?

It can, though more slowly than an opened bottle. Unopened red kept near 10–15°C with a neck-level fill often lasts years. The same bottle in a hot cupboard, or with mid-shoulder ullage while still young, oxidises behind the cork. Healthline’s 3–6-day red window applies after opening, not before.

How long does opened wine last in the fridge?

Healthline’s refrigerated, resealed windows are 1–2 days for sparkling, 4–5 for light white and rosé, 3–5 for rich white, 3–6 for red, 3–7 for dessert wine, and 1–3 weeks for Port. Cold slows the chemistry. It does not reset an already vinegary bottle.

Can I cook with wine that smells like vinegar?

No. That smell is a volatile-acidity fault in drinking wine, legally capped near 1.08–1.20 g/L acetic acid. Wine vinegar must contain at least 60 g/L acetic acid under EU 1308/2013. Pour the faulty bottle away and cook with labelled wine vinegar whose acidity is printed.

Does wine go bad in the fridge?

Opened wine still fades in the fridge on Healthline’s days. Unopened wine in a kitchen fridge is too cold and dry for years of cork storage, yet a working fridge at about 4°C will not freeze a 12% wine (Purdue puts that freeze near −5°C). Use the fridge for leftovers.