congeners

Congeners are chemical substances produced during the fermentation and aging of alcoholic beverages like whiskey, rum, or wine. They include a variety of compounds such as alcohols other than ethanol, as well as esters, aldehydes, and tannins, which contribute to a drink’s aroma, flavor, and complexity. While they can enhance the sensory experience, congeners are also associated with the severity of hangovers. Different drinks contain varying amounts of congeners based on their ingredients and production processes, influencing their taste profiles and potential after-effects.