Port, in two families.

The types of Port wine look like a long list of names, but they sort into two families. One family is kept away from the air and matures, if it matures at all, in bottle: the ruby styles, deep in colour and full of fruit. The other is the tawnies: at their best they spend years in wooden casks, where slow contact with oxygen turns the wine amber and nutty.

Everything else follows from that split. It decides how the wine tastes, whether it needs decanting, whether it improves in your cellar and how long it lasts once opened. Learn the family first and every label becomes easy to read.

How Port is made

Port comes from the steep valley of the Douro in northern Portugal. Grape spirit is added while the wine is still fermenting, which stops the yeast and leaves natural grape sugar in the wine. The result is sweet and strong, usually between 19 and 22% alcohol. Sugar and alcohol together protect the wine, so the best Ports age for decades and an opened bottle outlasts most table wines.

What happens next decides the style. Wine held in large vats or bottled young keeps its colour and its fruit. Wine left in wooden casks for years oxidises gently, fades from red to amber and takes on flavours of nuts, toffee and dried fruit.

The diagram sets the two families side by side: the bottle-aged styles from Ruby to Vintage Port and the wood-aged styles from Tawny to Colheita.

The bottle-aged family

• Ruby and Reserve Ruby. Young, deep red and full of fresh fruit. A Reserve is a selection of better wines with more depth and power, still made to drink young.
• Late Bottled Vintage. A ruby from a single year, bottled after four to six years in wood. Most are ready when you buy them. Some keep improving in bottle. Unfiltered ones throw a deposit and need decanting.
• Crusted. A blend of several years, bottled young and unfiltered; the label gives the bottling date. It throws a deposit in the bottle, the crust that gives it its name, so it needs decanting.
• Vintage Port. The wine of a single exceptional year, declared by the house, bottled within three years of the harvest and then aged in bottle for decades. It throws a heavy deposit and must be decanted.
• Single Quinta Vintage. A Vintage Port from a single estate (a quinta) rather than a blend of the house's best vineyards. Houses often make them in good years that fall short of a full declaration.

The most common confusion is between LBV and Vintage Port. Both come from a single year, but an LBV spends four to six years in wood, longer than any Vintage Port, so it reaches the bottle softer and ready to drink. A Vintage Port goes into bottle young and does its maturing there.

A house declares a vintage only in the years it judges best, so a declaration is one of the clearer signals of vintage quality in wine. The producer still matters as much as the year.

Young Vintage Port is dense, tannic and closed and the best keep developing in bottle for decades. The reward comes with time, as the fruit softens and the wine gains layers of spice, dried fruit and leather. Buying it young means committing to years of patience and cool, steady storage.

Ruby styles are protected from the air to keep their fruit, while tawnies are given years of slow air to trade fruit for nuts and toffee.

The wood-aged family

• Tawny and Reserve Tawny. Plain tawny is the entry point, lighter and simpler than the aged versions. It is often no older than a ruby and gets its paler colour without years in wood. A Reserve Tawny spends at least six years in wood and begins to show the nutty notes of maturity.
• Tawny with an indication of age. The long-established indications are 10, 20, 30 and 40 Years Old; in 2021 the IVDP, the body that regulates Port, added 50 Years Old. The number describes the style of the blend, the character a wine of that age should show, rather than the age of every drop in the bottle. The older the indication, the more fruit gives way to nuts, dried fruit and spice.
• Colheita. A tawny from a single year, aged at least seven years in wood. Look for the bottling date on the label: the gap between harvest and bottling is the time the wine spent in cask.

Apart from Colheita, tawnies are blends of wines of different ages, which is how a house keeps its style consistent from one bottling to the next.

Wood-aged Ports are ready to drink when they are bottled. Keeping them for years adds little. Because the casks have already done the work, they rarely need decanting either.

White and rosé, briefly

White Port is made from white grapes and ranges from extra dry to very sweet, the sweetest labelled Lágrima. Most is drunk young and well chilled as an aperitif, often with tonic, although aged whites with an indication of age exist too. Rosé Port comes from a light maceration of red grapes with no oxidation. It is made to drink young and cold, with aromas of cherry, raspberry and strawberry.

Serving and keeping Port

Serve tawny slightly chilled and white or rosé Port colder still. Ruby, LBV and Vintage Port are best a little below room temperature, never warm. Use a small wine glass and pour modestly: at around 20% alcohol a small glass goes a long way. Keep water on the table.

For Vintage Port and Crusted, stand the bottle upright for a day or longer so the deposit settles. Then pour slowly into a decanter over a light and stop when the sediment reaches the neck, as described in our guide to decanting. Old Vintage Port can have a fragile cork. Traditional port tongs, which snap the neck with heat, are best left to someone experienced; the calmer methods are in opening an old bottle.

Once opened, stoppered and kept in the fridge, a ruby or LBV stays in good shape for two to four weeks and a tawny for one to two months. An opened Vintage Port is closer to a fine red wine, so plan to finish it within a few days. There is more on every style in how long wine lasts once opened.

Choosing between the types of Port wine

Match the family to the moment.

• For an ordinary evening or a cheeseboard. An LBV or a Reserve Ruby: generous fruit, no ceremony and a bottle that lasts a few weeks once open.
• After dinner, with roasted nuts, dried figs or a caramel dessert. A 10 or 20 Years Old tawny, slightly chilled. The open bottle will see you through several more evenings.
• For a great occasion. A mature Vintage Port from a declared year, stood upright a day or two ahead and decanted on the evening, with a blue cheese alongside.

If the nutty, oxidative side of tawny is what you enjoy, the dry version of that world is Sherry: Amontillado and Oloroso give a similar nutty depth without the sweetness. If you want a mature Vintage Port with a clean storage history for a special year, we can source one for your cellar.