What actually happens when you decant
Decanting means pouring wine from the bottle into another container - the decanter - before serving it. It sounds simple, and it is. But what happens during that transfer is more interesting than it first appears.
When wine meets air, two distinct processes start. The first is oxygenation: the wine's molecules react with oxygen and begin to open up, releasing aromas that were locked inside the bottle. A young, tannic red, after twenty or thirty minutes in a decanter, often becomes softer, more approachable, more enjoyable to drink. The tannins relax, the fruit notes come through more clearly.
The second process concerns sediment. In aged red wines - and in some full-bodied whites - solid deposits form over time. We call them lees or tartrates. Drinking a wine with sediment is not harmful, but it is unpleasant: the solid fragments give a gritty sensation in the mouth and weigh down the finish. Carefully pouring the wine into a decanter while leaving the sediment behind in the bottle solves the problem.
These two goals - oxygenation and sediment separation - are often confused, but they are not the same thing. You might need one, the other, or both. Knowing which one you are after changes how you decant and for how long.
Which wines genuinely need a decanter
Not every wine needs to pass through a decanter. For some, it is actually counterproductive. The working rule is this: the younger, more tannic and more structured a wine is, the more it benefits from air. The more delicate, evolved or aromatic it is, the less it needs.
Young Italian reds are the ideal candidates. A Barolo or Barbaresco under ten years old is often closed and austere the moment you open it. Decanting it an hour ahead - sometimes two - transforms it. The same goes for a Brunello di Montalcino, an Aglianico del Vulture, a Sagrantino di Montefalco. These wines have a substantial tannic structure that needs oxygen to unwind. If you want to know which Barolo or Brunello to bring to the table, our selection of best Italian red wines includes useful serving notes.
Then there are wines with sediment: older reds with a few years of bottle age, certain riservas, some unfiltered natural wines. Here decanting is almost mandatory, but you do it slowly and carefully - not to aerate, but to separate.
Light reds, like a young Pinot Nero or a Bardolino, rarely need a decanter. Neither do aromatic whites - a Gewürztraminer, a Müller-Thurgau - which lose their most volatile aromas if you expose them to air for too long. There are exceptions, particularly among whites built for ageing, but we will get to those.
Can you decant white wine? Yes, but only certain ones
The short answer is yes, but only some. Many sommeliers still treat decanting whites as near-heresy, which is a shame - they are missing something interesting.
The whites that benefit are those with structure, some age and real complexity. Think of a Fiano di Avellino with a few years of bottle age, a mature Greco di Tufo, a Vermentino di Gallura from a good vintage with three or four years behind it. These wines, like structured reds, have components that open up with oxygen. Decanting them for fifteen or twenty minutes can bring out aromatic profiles that would stay hidden in a glass poured straight from the bottle.
Fresh, fruity whites made to be drunk young are a different story. A Pinot Grigio delle Venezie, a young Verdicchio, a straightforward Soave - these wines lose their freshness and more fragile aromas if you over-oxygenate them. For a look at the most interesting Italian whites, our guide to best Italian white wines has several useful starting points.
One special case: a white that is very cold. Sometimes you do not even need a decanter - just pour it into a large glass and wait for it to reach the right temperature. That alone - simply not drinking it ice-cold - can change the experience completely. A decanter speeds the process up, but it is not the only route.
Do you decant sparkling wine? No, and here is why
This is the question that comes up most often in any conversation about decanting, and the answer is fairly clear: no, sparkling wines are not decanted. The reason is straightforward - CO2, which is responsible for the bubbles, is a gas. Expose a sparkling wine to air and the gas escapes, the bubbles disappear, and you are left with something flat and lifeless.
This applies to Franciacorta, Prosecco, Trento DOC and any other sparkling wine, whether made by the traditional method or the Charmat method. The perlage - the persistence and fineness of the bubbles - is one of the most important qualities in a good sparkling wine. Sacrificing it to a pointless decanting makes no sense.
There is one rare exception worth mentioning: certain old vintages of Champagne or aged Franciacorta can develop sediment, just like older still wines. In that case, a very brief and gentle decant - purely to separate the sediment - is justified. But we are talking about collector's bottles with twenty or more years on them, not the Franciacorta you picked up for tonight. If you are looking for quality Italian sparkling wines, our selection of best Italian sparkling wines is a good place to start.
For everything else: as little air as possible, a cold glass, poured directly from the bottle. The freshness and the bubbles are what you paid for.
How to decant a wine with sediment: step by step
Decanting a wine with sediment takes a little planning. The first step starts the day before, or at least a few hours ahead: stand the bottle upright so the sediment settles to the bottom. If it has been lying on its side in a cellar for years, the sediment will have spread along the side of the bottle - give it time to sink.
When you are ready, do not shake the bottle. Open it with slow, deliberate movements. Hold a light source - a candle works perfectly, but a phone torch does too - beneath the neck of the bottle as you pour. The light lets you see the exact moment the sediment starts moving toward the neck. At that point, stop pouring, even if a little wine is still left in the bottle.
Pour slowly, at a steady angle, without any sudden movements. The more consistent your motion, the less you disturb the sediment. Some people use a funnel with a filter, but if the bottle has been standing upright long enough, it is not necessary.
How much wine do you lose? Usually very little - a finger, maybe two - which contains almost all the sediment. It is not waste; it is the cost of a well-made, well-kept wine.
How long to decant: timings for each type of wine
The practical question anyone holding a bottle faces when dinner is an hour away. The honest answer is: it depends on the wine, its age and its structure. Here are some concrete guidelines.
A young, tannic red - a young Taurasi, an Aglianico, a Barolo under five years old - needs at least an hour, often an hour and a half. In some cases two hours is not too long. The only way to know for certain is to taste: pour a sip before decanting, taste again after thirty minutes, then decide.
A medium-bodied red - a Chianti Classico, a well-made Montepulciano d'Abruzzo, a Ripasso della Valpolicella - opens up well with thirty or forty minutes. It does not need the long times that the biggest tannic wines require.
A mature red with more than ten years of bottle age is a different case: it does not need air to soften, but it may have sediment. Here you decant slowly, serve it promptly and do not leave it to oxygenate for too long - a highly evolved wine can collapse quickly if it sits in a decanter for hours.
The structured whites mentioned earlier: fifteen to twenty minutes is enough. Rarely more. And keep them cool during decanting - not in the refrigerator, but in a cool room - so they do not lose the freshness that is part of what makes them good.
Which decanter to choose: shape, material and what to spend
The range of decanters on the market is enormous, and the price difference between a basic model and a designer one can be significant. The good news is that for the main purpose - oxygenating wine or separating sediment - you do not need to spend a great deal.
Shape does matter, though. A decanter with a wide base and a broad body maximises the surface area in contact with air: that is what you want for a young, structured wine. Tall, narrow shapes limit oxygenation and are better suited to wines that need to be separated from sediment without too much air exposure.
The almost universal material is glass - transparent, odour-free, easy to clean. High-quality crystal exists, but for everyday use glass is more than adequate. The important thing is that it is neutral, with no soap residue after washing. Always rinse a decanter with hot water before use, and never use washing-up liquid unless you can rinse it out completely.
On price: in the accessible range you find decanters that work perfectly well. Higher up the scale you find refined design, thinner crystal, well-known brands - beautiful objects to put on the table, but not necessarily better at the job. If you are working to a budget, Vino.com often carries decanter-and-glass sets at reasonable prices alongside its wine selection.
The alternative to a decanter: a large glass
No decanter? Not a problem. There is an alternative that works well in many situations: pour the wine into a large glass and let it breathe there.
A wide glass - a Bordeaux or Burgundy style, with a broad bowl - still exposes a reasonable surface area of wine to air. It is not the same as a decanter with a wide base, but for medium-bodied wines, or when you have only thirty minutes, it is a practical solution. Pour, leave it, come back after half an hour. That is often enough.
There is also the double-decanting technique: pour the wine into any container, then pour it back into the cleaned bottle. It aerates well but is less elegant at a dinner table. For home use it works fine - a clean water jug, a wide-mouthed carafe, any large odour-free container will do.
What does not work is pulling the cork and leaving the bottle sitting on the table for an hour. The opening of the neck is too small for any real oxygenation - you are only creating the impression that the wine is breathing. If you want it to breathe properly, it needs contact with air over a much wider surface. A large glass, a decanter, a carafe. Not a bottle with the cork pulled out.
The most common decanting mistakes
The first mistake, already mentioned, is thinking that pulling the cork an hour ahead is enough. It is not. The neck of a 75cl bottle exposes a tiny surface area - almost nothing happens.
The second is decanting for too long. A delicate Pinot Nero, a red with many years of age, an unfiltered natural wine - these wines can lose freshness, aromas and complexity if you leave them in a decanter for hours. The more evolved or delicate a wine is, the less time it needs. Excessive oxygenation tips into oxidation, which is the opposite of what you want.
The third involves temperature. Decanting a cellar-cold wine in a warm room in summer will bring it to an uncomfortably high temperature quickly. If you have just brought a bottle up from the cellar, bear in mind that it will warm up during decanting. Keep an eye on it, particularly in summer.
The fourth - perhaps the most underestimated - is not tasting as you go. Decanting is not an exact science; it is a conversation with the specific wine in front of you. Taste a sip before you start, one after twenty minutes, one after forty. You learn far more that way than by following rigid timetables. And you enjoy the process: watching a wine evolve in the glass over the course of an evening is one of the most underrated pleasures for anyone who loves wine.
When a decanter is not needed: wines to open and drink
Not everything you buy needs a decanter, and recognising that helps you drink better - not worse. Some wines are made to be opened and poured, without ceremony. Treating them with too much solemnity risks spoiling the very thing that makes them good.
Wines built to be drunk young and fresh - light reds, aromatic whites, rosés, aperitivo wines - lose more than they gain from oxygenation. The most volatile aromas escape immediately, the freshness fades, and you end up with something less lively than the first sip poured straight from the bottle would have been. These wines should be served at the right temperature, in the right glasses, and drunk with straightforward pleasure.
The same goes for many wines in the accessible range, made for everyday drinking. You can find excellent bottles to open and drink on platforms like Vino.com, particularly in the range we cover in our selection of wines under 20 euro - labels that need no ritual to show their best.
The rule we use: if a wine is made to be drunk young and fresh, open it and pour it. If it is structured, tannic or has a few years of bottle age, give it air. Respect for wine does not mean unnecessary ritual - it means understanding what that specific wine needs, on that particular evening.
Domande frequenti
Can you decant wine in advance, even the day before?
For almost every wine, no. The ideal decanting window is a few hours at most. Leaving a wine in a decanter overnight almost always leads to oxidation - the wine loses freshness, colour and aroma. The only theoretical exception is certain very powerful, very young wines, but even then it is better not to go beyond three or four hours.
How do you clean a decanter without breaking it?
The real difficulty is that the curved shapes do not allow a standard brush to reach the walls. The simplest method: hot water and small stainless steel cleaning beads - sold specifically for decanters - which roll around and scrub the interior as you swirl them. Alternatively, hot water with a little bicarbonate of soda, followed by a thorough rinse. Never washing-up liquid unless you can rinse it out completely: soap residue ruins the wine.
Do you decant wine from a can or carton?
No. These formats contain young, fresh wines made for immediate drinking. They have neither the structure nor the complexity that makes decanting useful. Pour them into a glass and enjoy them as they are.
Is there a real difference between letting wine breathe in the glass and using a decanter?
Yes, and it is not small. A decanter with a wide base exposes a much greater surface area to air than a glass does. For a very closed, tannic wine, a glass alone is often not enough, or it requires much longer. For medium-bodied wines, or when time is short, a large glass is still useful and practical - just less powerful.
Can I order a decanter or Italian wines online if I am outside Italy?
For wine, it depends on where you are. The merchants linked from this site each cover a specific list of countries - that information sits in the partner table and is checked against what each shop actually ships to. Rather than state coverage here from memory, look at the shop page directly: the countries served and any delivery conditions are listed there, and they are more reliable than anything written in an article. For decanters and glassware, most online retailers ship across Europe without the restrictions that apply to alcohol.