Decanting wine: when it helps and how to do it at home
Decanting looks like ceremony, but it solves two practical problems: sediment in old wines and closed-up aromas in young ones. Here is when it is worth doing and how to do it with what you already have at home.
Two reasons to decant
Pouring wine from its bottle into another vessel before serving does one of two jobs.
- Separating sediment. Older red wines and some unfiltered wines throw a deposit of tannin, pigment and tartrate crystals. It is harmless but gritty and bitter. Decanting leaves it behind in the bottle.
- Aerating. Young, tannic reds can taste tight and muted straight from the bottle. Exposure to air helps the aroma open and can make the tannin feel softer.
These two jobs need different handling. An old wine wants a gentle pour just before serving. A young wine can take a vigorous splash and an hour in the jug.
Which wines benefit
- Young, full-bodied reds. Cabernet Sauvignon, Shiraz and similar wines with firm tannin often improve after 30 minutes to an hour in a decanter.
- Older reds with sediment. Wines with several years in bottle, especially unfiltered ones. Decant to remove the deposit, then serve fairly soon.
- Vintage port. It throws heavy sediment and is traditionally decanted.
- Some full whites. A rich, oaked white that smells closed or slightly reduced can benefit from a short decant.
Light, fruity reds, most whites, rosé and sparkling wine need no decanting at all. Our guide to sweetness, acidity and tannin in wine explains why tannic wines respond to air in a way that light wines do not.
What actually happens in the decanter
When wine meets air, some volatile compounds escape. Sulphur notes from bottling fade. Aromas that were masked by those notes become easier to smell. Over a longer time oxygen starts to react with the wine itself, which is why an open bottle eventually turns flat.
The softening of tannin people notice after decanting is mostly about aroma and perception over an hour or so. It is not the same as years of ageing. Do not expect a harsh young wine to turn into a mature one in a jug.
How to decant at home
You do not need a crystal decanter. A clean glass jug or a large carafe works.
- Stand the bottle upright. For an old wine, give it a day or two upright so the sediment settles to the bottom.
- Open it carefully. Remove the whole capsule top so you can see the neck clearly.
- Use a light. Hold a torch or your phone light under the neck of the bottle.
- Pour slowly and steadily. Tip the bottle in one continuous movement. Do not tilt it back and forth, which stirs the sediment.
- Stop when the sediment reaches the neck. You will see a dark cloud or thread creeping up. The last few centimetres stay in the bottle.
For a young wine that only needs air, you can pour briskly down the side of the jug, or even pour it back and forth once.
Decanting in Indian heat
The wrong temperature undoes everything a decanter does. In an Indian room at 30 °C, a red wine left in a decanter for two hours will be warm, soupy and taste of alcohol. Red wine shows best around 14 to 18 °C, cooler than most Indian living rooms.
Chill the bottle in the fridge for 20 to 30 minutes before decanting. Keep the decanter out of the sun and away from the kitchen. If the wine warms up, put the decanter in the fridge for ten minutes. This is not wine snobbery. It is the single easiest improvement most people can make.
Old wines need caution
A very old wine can be fragile. Its aromas are delicate and can fade within minutes of meeting air. Decant it only to remove sediment, taste immediately and drink it soon. Leaving a 20-year-old red in a decanter for two hours can ruin it.
If you are not sure, pour a small glass from the bottle first and taste. If it smells open and expressive, there is no need to aerate. If it smells closed and the tannin grips, decant and taste again every 15 minutes. Our guide to wine tasting for beginners helps with what to look for.
Why one wine needs an hour of air and another falls apart after ten minutes comes down to how it was made: skin contact, oak, sulphur dioxide and closure all play a part.
Common questions
How long should I decant red wine?
Young tannic reds usually improve within 30 minutes to an hour. Old wines should be decanted only to remove sediment and drunk soon after.
Is the sediment in old wine harmful?
No. It is mostly tannin, colour pigment and tartrate crystals. It tastes gritty and bitter, which is why decanting leaves it behind.
Should I decant white wine?
Rarely. A rich, oaked white that smells closed can benefit from a short decant, but most whites, rosé and sparkling wines are best poured straight from the bottle.
