Highlights
- Legs or tears are the trails and droplets that run down the inside of a wine glass.
- They form mainly because alcohol evaporates from a thin film of wine, changing surface tension.
- Evaporative cooling and the movement of the liquid film also contribute.
- More visible legs do not prove that a wine is better, older, sweeter or fuller-bodied.
- Legs are not a reliable way to estimate alcohol by volume (ABV).
- Glass cleanliness, temperature, shape and swirling can all change what you see.
Quick answer
Wine legs are the streaks or droplets that appear inside a glass after wine has been poured or swirled. They are sometimes called tears. The effect begins when wine forms a thin film on the glass and ethanol evaporates from it. This creates differences in the film’s composition and surface tension, drawing some liquid upwards before it gathers and runs back down as droplets.
Legs can be interesting to observe, but they are not a dependable tasting test. They do not tell you whether a wine is high quality, old, sweet, full-bodied or high in alcohol. For alcohol information, read the wine’s ABV on the label. For sweetness, body and quality, smell and taste the wine.
How do wine legs form?
After wine wets the inside of a glass, some of it creeps upwards as a thin film. Ethanol evaporates more readily than water from this film. That changes the local balance of the liquid and creates a surface-tension gradient—a difference in how strongly parts of the film pull on themselves.
This gradient drives liquid upwards, a type of fluid movement known as the Marangoni effect. The liquid gathers in a ridge or band near the top of the film. The ridge eventually becomes unstable, and gravity pulls droplets back down the glass.
That is the beginner-friendly version of a more complicated process. Evaporative cooling also contributes, so it is too simple to say that legs are caused by alcohol evaporation alone.
Why can the same wine show different legs?
What you see depends on more than the wine itself. Visibility can change with:
- alcohol by volume and other aspects of the wine’s composition;
- dissolved material in the wine;
- the wine’s temperature and the surrounding humidity;
- the shape, angle and surface of the glass;
- whether the glass is clean or has traces of detergent, grease or other residue;
- how much wine is in the glass; and
- whether the wine has been swirled.
This is why the same Australian table wine may show a different pattern in different glasses or settings. A prominent display is not a fixed property that follows the bottle everywhere.
What are “church windows”?
Australian learners may hear legs, tears and church windows at tastings, cellar doors, wine courses or in reviews. Legs and tears are commonly used for the trails or droplets. Church windows is a less standardised descriptive term for arch-like or window-like patterns formed by the film and trails above or between them.
The terminology is not perfectly consistent, so it is best treated as a visual description—not a formal measure of wine quality or structure.
Common myths about wine legs
Do more legs mean better wine?
No. Prominent legs do not prove that a wine is better, more expensive or more skilfully made. A wine with few visible legs is not necessarily poor or faulty.
Do legs show sweetness, age or body?
No—not reliably. Wine composition can influence the appearance, but glass and environmental conditions matter too. Legs cannot diagnose sweetness, age, concentration or body. They should not replace assessing body on the palate or distinguishing sweetness from other wine sensations.
Can legs reveal alcohol percentage?
Not precisely. Alcohol contributes to the physical effect, but legs are affected by several variables. Use the ABV declaration on an Australian wine label instead of trying to estimate alcohol from the glass.
The useful takeaway
Treat legs as an intriguing visual effect rather than a scorecard. Notice them if you enjoy observing wine, then move on to the more useful parts of tasting: smell the wine, taste it and decide what you actually experience.
For a broader framework, see how to taste wine, what wine body means, what sweetness means in wine and how serving temperature affects wine.
FAQs
Should I swirl wine to look for legs?
You can, but swirling is not a quality test. It changes how much wine coats the glass and may make trails easier to see.
Are wine legs the same as tears?
They are commonly used as alternative names for the same visible phenomenon, although usage is not perfectly standardised.
What should I look for instead?
Use appearance as one small observation. Smell and taste the wine to assess its aroma, sweetness, body, balance and overall quality.