How to tell if wine is still drinkable

Quick answer

To tell whether wine is still worth drinking, start with the bottle and closure. Look for leakage, seepage, a damaged seal, a pushed-out cork, visible mould or other signs of contamination. If the packaging looks compromised, do not treat it as an ordinary tasting decision.

If the bottle appears intact, pour a small amount and inspect the wine. Check its colour and clarity, but do not assume that sediment or clear, glass-like crystals mean it has spoiled. Then smell it. Finally, if nothing has raised an obvious concern, taste a small amount.

This process helps you judge quality and enjoyment. It cannot guarantee that a wine is safe in every circumstance. “Drinkable”, “sound”, “past its best”, “faulty” and “safe” are different ideas.

A simple inspection-to-tasting sequence

1. Check the bottle and closure

Look for wine that has leaked around the cork or capsule, a broken seal, a cork pushed noticeably out of the bottle, damaged packaging or contamination around the opening.

A bottle that has spent summer in a hot car, shed, garage, roof space or unconditioned cupboard deserves particular attention. Heat can accelerate unwanted changes and temperature swings can stress the closure. Heat exposure does not automatically mean the wine is unsafe or ruined, but it makes quality problems more likely.

2. Look at the wine

Pour a little into a clean glass. Consider the colour, clarity and surface.

Some changes are not automatically bad news:

• Older red wines can develop sediment.
• Clear or pale crystals may be tartrate deposits formed from natural components of wine.
• A wine may look more developed or less bright with age.

Sediment can affect texture, so pour carefully and leave the heaviest deposit in the bottle. Do not assume that every particle is harmless, though. Unidentified foreign material, visible mould, an unusual surface film or other signs of contamination are reasons to stop.

3. Smell it

A sound wine should smell broadly consistent with its style, even if it has developed with age. A wine that is simply older may have softer fruit or more developed aromas without being faulty.

Some aromas point to quality problems:

• Oxidation: dull or tired aromas, bruised apple, cardboard, straw, hay, nuttiness or a Sherry-like character. Severe oxidation can seem cooked or “madeirised”.
• Volatile acidity: a pronounced vinegar-like smell.
• Ethyl acetate: a sharp nail-polish-remover or solvent-like character.
• Possible cork taint: musty, mouldy or damp-cardboard aromas.

These descriptions are useful warning signs, not a home chemistry test. Not every musty smell has the same cause, and some oxidative characters are deliberate in particular styles.

4. Taste only a small amount

If the bottle and wine show no obvious contamination or packaging concern, a small taste can tell you whether the wine is enjoyable. Taste is mainly a quality check, not proof of safety.

You can spit it out. Stop if the flavour is clearly unpleasant, sharply faulty or concerning. There is no prize for finishing a bottle that is past its best.

Drinkable, sound, past its best or faulty?

These terms are related but not interchangeable:

• Drinkable: acceptable for your intended enjoyment. It does not have to be youthful or at peak quality.
• Sound: broadly in expected condition for its style, without a noticeable fault or taint.
• Past its best: quality has declined, but the wine may still be acceptable to some people.
• Faulty: a noticeable defect such as oxidation, excessive volatile acidity or cork taint.
• Safe: a food-safety conclusion. Smelling and tasting cannot guarantee this in every situation.

An old wine may be sound, past its best or faulty. Age alone does not decide which. The wine’s style, closure and storage history matter, as does what you enjoy.

Opened versus unopened wine

An opened bottle usually changes faster than a sealed one because opening increases contact with oxygen. The change is often quicker when the bottle is partly empty, loosely closed or stored somewhere warm.

Oxygen can gradually reduce freshness and contribute to oxidation. A suitable closure and cooler storage may slow quality loss, but they cannot reverse changes that have already happened. There is no single number of days that applies to every opened still wine: the style, fill level, closure, temperature and original condition all matter.

Unopened wine can also deteriorate. Direct light, high temperatures, repeated heating and cooling, leakage and closure failure can all affect quality. This is why a bottle found in a hot vehicle or garage should be assessed by its condition rather than judged by age alone.

When should you stop and discard it?

Take the conservative option and discard the wine rather than tasting further when:

• the bottle, seal or closure is visibly compromised;
• there has been substantial leakage;
• you can see mould, contamination, an unusual surface film or unidentified foreign material;
• the packaging has been contaminated;
• the wine is clearly abnormal and you have reason to suspect contamination;
• it is so unpleasant that further tasting serves no purpose.

A strong vinegar-like, solvent-like or musty aroma commonly indicates a faulty wine and a poor drinking experience. That does not mean every faulty-smelling wine is automatically dangerous. Equally, a normal appearance or smell is not a guarantee of safety.

Sparkling and fortified wines are different

Sparkling wine loses its fizz quickly after opening. Comité Champagne recommends using a suitable airtight sparkling-wine stopper immediately and gives one to two days as practical Champagne-specific quality guidance. That is not a universal safety deadline.

Fortified wines also vary. Some are more stable because of their style and alcohol level, while some are intentionally oxidative. Do not apply one still-wine rule to every fortified bottle; follow the producer’s guidance where available.

The Friday-night decision checklist

If you are deciding about a bottle tonight:

1. Is the bottle and closure intact?
   If not, stop.

2. Is there visible contamination, mould, a film or unidentified material?
   If yes, discard it.

3. Does the wine show ordinary sediment or clear crystals?
   These may be harmless deposits, so continue cautiously if nothing else is wrong.

4. Does it smell fresh, developed or clearly faulty?
   Vinegar, solvent, strong mustiness or other pronounced faults are reasons not to continue.

5. If there is no obvious concern, does a small taste seem sound and enjoyable?
   If not, stop. “Still drinkable” does not mean “worth drinking”.

The most useful rule is simple: assess the wine’s condition, not just its age—and do not force yourself to drink a bottle you do not trust or enjoy.

Frequently asked questions

Does old wine automatically go bad?

No. Age alone does not determine whether a wine is sound, past its best or faulty. Storage conditions, closure and style matter.

Is sediment a sign that wine has spoiled?

Not necessarily. Sediment can be a normal deposit, particularly in older red wine. Pour carefully, but treat unidentified material or visible contamination differently.

Are wine crystals dangerous?

Clear crystals can be tartrate deposits formed from natural wine components. However, do not assume every unidentified particle is a tartrate crystal.

Can I drink wine that smells like vinegar?

A strong vinegar smell is a sign of a faulty wine and it is unlikely to be enjoyable. It is a practical reason to stop tasting, without claiming that the wine is automatically poisonous.

What if wine has been left in a hot car?

Heat may accelerate quality damage and affect the closure, but it does not automatically prove that the wine is unsafe. Check for leakage and packaging damage, then assess its appearance and aroma cautiously.

Does a wine that smells fine have to be safe?

No. Sensory checks help assess quality and enjoyment, but they cannot guarantee food safety in every circumstance.