How to Decant Old Barolo (and Other Aged Nebbiolo)

Few wines reward patience the way Barolo does. Made from Nebbiolo in the hills around the village of Barolo in Piedmont, it starts life with fierce tannin and high acidity, and over decades it softens into something translucent and haunting: rose petals, tar, dried cherry, truffle, leather. By the time a bottle gets there, it has usually also thrown a deposit. Which raises the question every collector eventually asks while standing over a twenty-year-old bottle: do I decant this, and if so, how?

The honest answer is that experts disagree, and the disagreement is worth understanding before you pull the cork.

Why old Barolo throws sediment

Barolo is built for the long haul. Under its DOCG rules it must be aged for at least 38 months before release, including at least 18 months in wood, and Barbaresco, its neighbor, for at least 26 months with 9 in wood. Nebbiolo is a pale grape, low in color pigment, but very high in tannin. As the wine ages in bottle, tannins and pigments bind together into larger molecules that eventually fall out of the wine as a fine, dark deposit, sometimes with a few tartrate crystals mixed in. (Our explainer on what wine sediment actually is covers the chemistry.)

You can often see age in the glass before you taste it. Young Nebbiolo is already lighter in color than you might expect; with time the rim turns brick and orange. A traditionally made Barolo with ten or more years of bottle age is a strong candidate for sediment, as our guide to which wines throw sediment explains region by region.

The debate: air or no air?

Here's where opinions split.

On one side, the classic Barolo advice is that the wine needs lots of air. Jancis Robinson's rough guidelines group Barolo, Barbaresco and Brunello with wines that can be decanted "splashily" up to four hours before serving, though those guidelines are aimed at young, serious bottles. New York retailer Chambers Street Wines goes further, suggesting six to eight hours for Barolo and Barbaresco up to 20 years old and three to four hours for older bottles, noting that with these wines the last glass is often the best.

On the other side, writer Kerin O'Keefe, a long-time Barolo specialist, argued in Decanter that older Nebbiolo and Sangiovese are particularly penalized by decanting, because their delicate aromas need gentle aeration. Her approach is to uncork an older bottle three or four hours ahead and let it breathe slowly in the bottle, and if sediment bothers you, simply leave the last ounce or two behind.

Somewhere in between sits the view of Barolo producer Manzone Giovanni in Monforte d'Alba: young Barolo often benefits from one to two hours in a decanter, but with Barolo aged twenty years or more, the aim changes. Mature wines can be profoundly fragrant yet fragile, so decant chiefly to remove sediment, do it immediately before serving, and taste before deciding whether it needs any more air.

These positions are less contradictory than they look. Everyone agrees on two things: an old Barolo shouldn't be served with a mouthful of grit, and an old Barolo shouldn't be thrashed around in a wide decanter for hours without someone tasting it first. The practical solution is to separate the two jobs. Get the wine off its sediment gently, then let the wine itself tell you how much air it wants.

Step 1: Stand the bottle up

Move the bottle upright at least a day before you plan to open it, and longer if you can manage it. Nebbiolo sediment can be fine, and fine sediment takes time to slide down the side of the bottle and settle into the base. If the bottle has been lying in a rack for twenty years, there's also likely a stripe of deposit along one side. Our guide to how long wine should stand upright goes into the timing.

If you're bringing a bottle to a dinner, the same applies, and it's worth asking the host to stand it up for you.

Step 2: Open it carefully

Old Barolo corks can be long and soft. A cork that has spent decades in a bottle can tear under a standard corkscrew, so an ah-so or a two-part cork puller that combines a worm with side blades is a sensible choice. Cut the capsule below the lip, wipe the top of the cork, and pull slowly. See how to open an old bottle of wine for the full technique.

If the cork does break and pieces end up in the wine, don't panic. It's a nuisance, not a fault. Our post on what to do when the cork crumbles walks through the options.

Smell the wine as soon as it's open. A little mustiness or reduction on first opening can blow off; persistent damp-cardboard aromas point to cork taint, which no decanting method will fix.

Step 3: Separate the wine from the sediment

You have a few options, and each is covered in more detail in our guide to decanting wine with sediment.

The classic pour. With a light behind the neck, pour slowly and steadily into a clean decanter or carafe, without stopping and starting, and stop when you see the sediment reach the shoulder. For an aged Barolo, a narrower decanter limits the surface area exposed to air, which suits the fragile-wine camp.

Double decanting. Pour the wine off its sediment into a decanter, rinse the bottle, and pour the wine back into it. It's a traditional way to serve from the original bottle. It does add an extra splash of air, so taste as you go. More in what is double decanting.

A siphon. If your aim is to remove the sediment without adding air, a siphon is the most direct route. The Jory is a siphon decanter designed in Oregon that draws clear wine off the sediment. The bottle stays upright, so the deposit stays where it settled, and the wine runs into your decanter without the splashing of a pour. The bottle needs to sit higher than the vessel you're filling. If any cork crumbled into the bottle, you can use the Jory as normal, and it won't draw up the cork. This approach fits the "gentle aeration" philosophy well: you get clean wine, and you decide afterward whether it needs more air.

Leave it in the bottle. O'Keefe's method is a valid choice. Open early, pour carefully into glasses, and leave the last ounce or two. You'll get a little sediment in the final pours unless the bottle has stood a long time.

Step 4: Taste, then decide how long

Once the wine is clear, taste it. If it's open, fragrant and complete, serve it. If it seems tight or a little closed, give it time and taste again every twenty or thirty minutes. Old Barolo often keeps developing in the glass for hours, and that slow unfolding is part of the pleasure.

As very rough guidance from the sources above:

• Barolo under about 15 years old: one to two hours or more in a decanter is common, and some retailers suggest considerably longer.
• Barolo around 15 to 25 years old: opinions vary widely, from one hour to several. Taste regularly.
• Barolo 25 years and older: separate the sediment just before serving and let the wine open in the glass.

Vintage and producer matter more than any rule. A big, structured vintage from a traditional producer will want more time than a lighter year.

If you're wondering whether decanting and aerating are really the same thing, they aren't. We explain the difference in decanting vs. aerating, and the distinction matters more with old Nebbiolo than with almost any other wine.

The short version

Stand the bottle up for a day or more. Open it with a tool built for old corks. Separate the wine from the deposit gently and with as little splashing as you can. Then taste, and let the wine decide how much air it wants. Done that way, you get the best of both camps: no grit in the glass, and none of the fragrance that made you save the bottle in the first place left behind.