Beading/Tears

Beading and legs (pearling and tears) in the glass are observable phenomena that often reflect the alcohol content and the liquid's viscosity, but they should not be used as the sole quality indicator.

• Physical mechanisms: Beading refers to small droplets or beads that cling to the inside of the glass or at the rim. They are formed by differences in adhesion and cohesion between the liquid and the glass surface as well as by surface tension and temperature. Tears (legs) are the longer rivulets that run down the inside after swirling and resting; they form when components in the liquid (such as ethanol, glycerol and sugar) distribute differently, creating segments with different flowing properties.

• Factors that influence:

• Alcohol by volume (ABV): Higher ABV increases the tendency for beading and more pronounced tears.
• Viscosity and composition: Thicker liquids with higher glycerol or sugar content produce slower dripping and more pronounced beads.
• Temperature and the glass surface: Warm liquids and rough glass enhance visibility; cooler temperatures often reduce visibility.
• The glass's shape and cleanliness: The inside of the glass affects how droplets form and run.

• Age and cask composition: Some whiskies contain more oils and glycerol from maturation, which can contribute to viscosity.

• Note on judging: Beading and tears are only one of many sensory parameters and do not provide a definitive assessment of quality. Variations in glass, temperature and observation technique can yield misleading results, so they should be used cautiously and in conjunction with aroma, taste and mouthfeel.

• Practical tips: To observe, gently swirl the glass and let the liquid rest for 15–30 seconds, and compare any observations with the same whiskey under similar conditions.

• Summary: Beading and tears can indicate alcohol content and viscosity, but they are not an absolute quality indicator and should be regarded as a supplementary observation in sensory analysis.