Older means better? What age really reveals about a spirit

Older means better: where does the idea come from?

With wine, we know the image of the precious old vintage; with Cognac, the proud letters XO. From this, people often derive a general rule: the longer a spirit sits, the finer it becomes. So when someone finds a dusty old bottle of plum brandy from grandfather in the cellar, they often assume it's a treasure.

This rule holds true for only some spirits, and even there, not without limit. What matters is where the spirit was stored and what happened to it there. A wooden vessel changes it, while glass and stainless steel barely do. From the moment of bottling, the aging clock effectively stops. So anyone trying to judge the age of a spirit must first ask what kind of vessel it spent its time in.

Fruit brandy: at its most fruity after a short rest

Classic fruit brandies like Kirsch, Williams, or plum brandy rest in glass demijohns or stainless steel tanks after distilling. There, they round out, sharp edges fade, and the aromas come together. The specifications for Zuger Kirsch require at least six months of aging. After that, the spirit has reached its goal: it should smell of fresh fruit, clear and precise.

Decades in a glass demijohn don't make such a spirit better—often just flatter. Wood-aged fruit brandies also exist, such as apple or plum brandies from oak casks. They develop notes of vanilla, spice, and color. Whether you prefer the fresh style or the wood-aged one is a matter of taste, not age. A young Williams and a cask-aged apple brandy are two different ideas of what fruit brandy can be.

Cognac, Armagnac, Calvados: when does the cask matter?

For brandy, Cognac, Armagnac, and Calvados, wood aging is mandatory, and there, time really does make a difference. A Cognac needs at least two years in oak, and an XO has required at least ten years since April 1, 2018. Calvados must spend at least two years in wood, Calvados Domfrontais three. Under EU spirits regulation, the stated age always refers to the youngest component in the blend, not the oldest.

But even in the cask, more time isn't automatically better quality. Very old spirits can turn woody, bitter, and tired if the cask has given up too much. For this reason, cellar masters transfer some old Cognacs into large glass vessels to halt further aging. Each year, part of the cask's contents also evaporates—in the Cognac region, according to the industry association, this amounts to around 41 million bottles annually. A well-made VSOP can outshine a weak XO.

Does schnapps age in the bottle? What light and air do to it

A spirit doesn't continue to age in a sealed bottle, because glass releases nothing and lets in almost no oxygen. So the years spent in the cabinet don't count toward its age. A Cognac that sat in a display case for twenty years is still exactly as old as the day it was bottled.

A spirit can still age in the bad sense, though. In an opened bottle, aroma escapes over the years, and a half-empty bottle eventually tastes dull. With stone-fruit brandies, there's a health concern as well: trace amounts of hydrocyanic acid can, under light, form ethyl carbamate, a substance suspected of causing cancer. So that old Kirsch sitting on the windowsill isn't a treasure—it's a good argument for storing spirits in the dark.

Whether a find from the cellar still tastes good is revealed by the nose. If the spirit smells fresh, of fruit or wood, it has weathered the years well. If it seems dull, like cardboard or solvent, time has done it harm. Collectors' interest in old bottles is therefore based on rarity and history—a spirit as it was made back then—not on any aging that happened in the cabinet. Opening such a bottle means tasting a piece of the past, not a further-matured spirit.