If you pay just minimal attention to the foil when opening a wine bottle, you could conclude that the covering is just decorative. If you looked closer and noticed the small hole at the top, you might assume that the capsule had a function, maybe exposing the cork to a minute amount of air for some reason. In either case, you were probably surprised recently when you opened your monthly wine package and noticed that the bottles were without the capsule that normally covers the cork. I was surprised, too.
When I first tasted last month’s Karah Estate wines, I failed to notice that the winery’s most costly Reserve Pinot Noir did not have a foil. After we opened the cases that were delivered to the warehouse, I assumed that the winery had made an error and quickly called Karah winemaker Jason Baker, who told me that he made a deliberate choice to omit the foil. Coincidently, all of the Hobo wines that followed this month were without capsules, and I was ready with questions when I interviewed owner Kenny Likitprakong.
As is often the case, behaviors remain even when the reasons that they existed cease. Canopies over beds protected people who slept under them when thatched roofs caved in during storms. We no longer have thatched roofs, but some people still have canopies over their beds.
At one time, capsules were placed on corks because they prevented rodents and cork weevils from enjoying the wine before the master of the house. Historically, these foils were made from lead that we eventually understood was poisonous and left traces especially at the top of the bottle, which then entered wine glasses during a pour. Lead was phased out by law in 1996, both in the US and the EU, and now capsules are made from tin, aluminum, or polyethylene.
But in our time of a growing consciousness of scarcity rather than abundance, some young winemakers, especially in California, are choosing to eliminate capsules altogether, since they now serve no purpose whatsoever, the rodent population having been thoroughly chastised for interfering with human activity. Capsules are made from materials that are mined from the earth, cost money, and end up in landfill. They also obscure the cork and fill in the bottle, which is important. If the fill is not close to the cork, the wine may be oxidized.
Occasionally, reason triumphs over habit as it seems to be doing now among some young winemakers. We should drink to that.
What Replaced Lead, and Why
The move away from lead was not a matter of taste but of regulation. United States rules now prohibit tin-coated lead foil capsules on wine bottles outright, a prohibition set out in the federal food additive regulations at 21 CFR 189.301. Anything you encounter on a modern bottle is therefore tin, aluminum, a polylaminate of aluminum and plastic, heat-shrunk polyethylene, or wax.
Each material behaves differently under a knife, which is the only practical difference most of us notice. Tin is soft and cuts cleanly. Aluminum tears in ragged strips, polylaminate resists the blade until it suddenly gives, and heat-shrink sleeves usually have a pull-tab that works about half the time.
| Treatment | Feel when cutting | Hides the fill level | Notes |
|---|---|---|---|
| Tin | Soft, cuts cleanly in one pass | Yes | The heaviest and costliest option |
| Aluminum | Thin, tends to tear | Yes | Light and widely used |
| Polylaminate | Stiff, needs a firm blade | Yes | Mixed materials complicate recycling |
| Heat-shrink sleeve | Tough; pull-tab or a deep cut | Yes | Grips the neck tightly |
| Wax | Chips, or take the corkscrew straight through | Yes | Messy but seals the top |
| None | Nothing to remove | No | Cork and fill level both visible |
Cost is not trivial either, even though a single capsule is measured in fractions of a cent. Multiplied across a production run it becomes a real line item, alongside the machine that applies it and the labor to keep that machine running. A small winery that drops the capsule removes a step, a supplier, and a piece of equipment in one decision.
The Fill Level Is the Real Information
The distance between the wine and the bottom of the cork is called ullage, and it is one of the few things a sealed bottle will tell you honestly. A young bottle should be filled to within a centimeter or so of the cork. A wider gap means wine has evaporated or air has moved in past the closure, and both point toward oxidation.
Ullage widens naturally with age, which is why a fifty-year-old bottle with a mid-neck fill can still be sound while a three-year-old bottle with the same fill is suspect. What matters is the gap relative to the age. A capsule hides all of it, which is precisely the argument the winemakers in this article were making.
Two other things are worth a glance before the corkscrew goes in. Wine seeping past the cork and staining the capsule suggests the bottle was stored warm, and a cork pushed slightly proud of the glass usually means the same thing.
Cutting a Capsule Cleanly
There are two schools, and both are defensible. The traditional method cuts below the second lip of the bottle so the pour never crosses the metal, which mattered a great deal when that metal was lead and matters less now.
- Rest the blade against the lower lip and rotate the bottle, not the knife, for an even cut.
- Make a second cut on the opposite side if the foil resists, then lift the disc off with the blade tip.
- Wipe the lip of the bottle and the top of the cork with a clean cloth before inserting the worm.
- Set the removed foil aside rather than letting it drop into the ice bucket or the serving tray.
The alternative removes the whole capsule so nothing interferes with the pour and the cork can be examined. Neither approach changes what is in the glass. More on the small mechanics of handling and serving sits in our guide to everyday wine skills and knowledge.
Packaging as a Winemaking Decision
Dropping the capsule belongs to a broader rethinking of everything around the wine rather than in it. Lighter glass, recycled paper labels, and simpler cartons all follow the same reasoning, since the weight of the package accounts for a substantial share of a bottle’s footprint before it ever leaves the property.
Smaller producers can make these changes quickly because they control their own packaging line, and the choices tend to appear first among the kind of independent California wineries that work at modest volumes. Larger houses face distributor expectations and shelf conventions that move slowly. That is one reason a bare cork still reads as unusual.
Wine Capsule FAQ
Does a missing capsule mean the wine is lower in quality?
No. The capsule has no contact with the wine and no effect on how it ages. Its absence reflects a packaging decision, and it is as likely to appear on an expensive bottle as an inexpensive one.
Should the capsule be removed entirely or only the top cut off?
Either is correct. Cutting below the lip is the older restaurant convention; removing the whole capsule is tidier and lets you see the cork and the fill. Consistency matters more than the choice itself.
Do capsules keep a cork from drying out?
Not meaningfully. Humidity around the cork is governed by storage conditions and by the wine on the other side of it, not by a thin sleeve of metal. Bottles stored in a stable, reasonably humid place fare well regardless, a point worth remembering when planning wine for celebrations and gatherings that involve older bottles.