Eucalyptol, also known as cineole, is a natural organic compound that is a colorless liquid. It is a monoterpenoid and an ether. Eucalyptol is the primary component of eucalyptus oil, comprising up to 90% of the oil. It is also found in other aromatic plants such as bay leaves, tea tree, sweet basil, wormwood, rosemary, and sage. Eucalyptol has a fresh, mint-like aroma and a spicy, cooling taste. It is used in flavorings, fragrances, and cosmetics. In the culinary world, it is used to impart a cooling sensation and is a key component in some spice blends. Eucalyptol is also known for its medicinal properties, including anti-inflammatory and antimicrobial effects. It is used in cough suppressants and decongestants.