When you swirl a glass of wine, take notice to the streaks that attach to the glass. The droplets that form at the top of the ring of wine and run down the sides are called ‘Legs’.
Wine is comprised mostly of water and alcohol. Since alcohol has a lower surface tension than water, it evaporates faster and the water flows away from the alcohol. The legs are more apparent with wines that have a higher percentage of alcohol.
There’s a common misconception that wine with more legs is of higher quality than one with less. This is completely false.
Wine legs can also be referred to as tears of wine, curtains or church windows.