An authentic Thai iced tea is a combination of strong black tea, condensed or evaporated milk, sugar, and spices that is served over crushed ice. Traditionally, the drink is made with loose-leaf black tea such as Assam, Ceylon, or Keemun tea varieties, while the additions usually include crushed tamarind, anise, or cardamom.
However, both street and restaurant versions nowadays often incorporate with pre-packed tea mix that contains food coloring, which gives the tea a distinctive and unnatural orange tint, while the traditional version should have a deep amber hue. The tea is usually chilled before it is combined with ice.