Lacquer obtained from the sap of the Melanorrhoea (Gluta) usitata tree, which belongs to the Anacardiaceae family and grows in Laos, Myanmar, Thailand and Cambodia. The sap is harvested from the tree by tapping and has a straw colour, which quickly turns glossy black. Its main function is to waterproof and heatproof the object and has excellent adhesive properties, as well as good stability in hot, acid and alkaline conditions.
