Have you ever hesitated over a bottle because it had a screw cap? Perhaps you were choosing a gift, and something quietly told you that a proper wine should have a cork. You are not alone. It is one of the most common assumptions I hear, and it is worth unpicking, because the answer says a lot about how wine has changed and about how we choose it.
Let me start with a confession. Some of the finest wines I sell are sealed with a screw cap, and the winemakers who made them would not have it any other way. I know this because I have stood in their wineries and asked them. When I visited producers in New Zealand, the question of closures came up again and again, and every answer pointed the same way. They chose screw caps not to save money, but to protect the wine.
So let us look at both sides properly.
The case for cork
Cork has sealed wine bottles for more than three hundred years, and it earned that job on merit. It is natural, it compresses beautifully, and it grips the neck of a bottle with just enough give to keep wine safe for decades. There is also something quietly remarkable about where it comes from. Cork is stripped by hand from the bark of cork oak trees, mostly in Portugal and Spain, and the trees are not felled. The bark grows back, and the same tree can be harvested every nine years or so for two centuries. Those cork forests support wildlife found almost nowhere else. As natural materials go, it is hard to beat.
Then there is the wine itself. A cork allows a tiny, almost immeasurable amount of oxygen to reach the wine over many years. For fine reds built to age, that slow breathing is part of how they soften and develop. Many traditional producers believe no other closure quite replicates it, and for wines destined for a decade in a cellar, they may well be right.
And of course there is the ceremony. The cut of the foil, the twist of the corkscrew, that soft pop. It is theatre, and theatre matters. Wine is about pleasure, and pleasure starts before the first sip.
The case against cork
Here is the uncomfortable part. Cork can ruin wine. A natural compound called TCA, which forms in a small proportion of corks, produces what the trade calls cork taint. A tainted wine smells flat, musty, like damp cardboard or a wet cellar. It is not harmful, but it is heartbreaking, because the wine underneath is lost. Historically, estimates of affected bottles ran as high as one in twenty. The cork industry has worked hard on this and the numbers have improved considerably, but the risk has never reached zero.
There is also variability. No two corks are identical, so two bottles of the same wine, stored side by side, can age differently. If you have ever opened two bottles from the same case and found one singing and one tired, the cork may well have been the difference.
The case for screw caps
The screw cap answers both problems at a stroke. No cork, no cork taint. Every seal is identical, so every bottle reaches you exactly as the winemaker intended. That consistency is precisely why New Zealand’s producers adopted screw caps almost wholesale in the early 2000s, followed closely by Australia. These were not budget producers cutting corners. They were quality-obsessed winemakers who had grown tired of seeing their best work spoiled by a two-pence piece of bark.
There are practical joys too. No corkscrew needed, which matters more than you might think on a picnic beneath the Quiraing. The bottle reseals in a second, keeping an unfinished wine fresher for longer. And for the crisp, aromatic whites that suit Skye’s seafood so well, a screw cap preserves exactly the freshness you bought the wine for.
The case against screw caps
They are not perfect. A screw cap seals so tightly that some wines can develop the opposite problem to oxidation, a slightly stony or struck-match character that winemakers call reduction. Good producers know how to prevent it, but it asks more of them at bottling. The long-term ageing question is still being debated too. Screw caps have only been mainstream for about twenty-five years, so while trials on Australian Rieslings have been very encouraging, we simply have less evidence for how a great red develops under a screw cap over thirty years than we do under cork.
And then there is perception. Fair or not, a screw cap still whispers “everyday” to some buyers, particularly on a gift. That perception is fading, but it has not vanished, and I would be pretending if I said otherwise.
So what should you look for?
Here is my honest guidance. The closure tells you about the winemaker’s intention, not the wine’s quality. A screw cap on a fresh white or a fruit-forward red is usually a sign of a producer protecting exactly what you are paying for. A cork on a structured red built for the long haul reflects a different, equally valid judgement. Neither is a shortcut, and neither is a red flag.
What matters far more is who made the wine and how much care went into it. That is the question a closure cannot answer, but a merchant can. Every wine on my shelves comes from a producer I have visited, and I can tell you not just what seals the bottle, but why they chose it.
So next time you pick up a bottle, twist or pull with equal confidence. And if you would like help choosing, whether it is a screw-capped Pinot Noir from Oxfordshire or a corked classic from the Loire, get in touch directly or visit www.wineguyonskye.com. I deliver across Skye and the whole of the UK, and there is a story behind every bottle.