The aroma of black tea is more complex. More than 300 compounds are present, half of which have been identified and none of which alone gives a unique black tea aroma.

• 红茶的香气更复杂，有300多种化合物存在，其中一半已经鉴别出来，但没有单独的哪一种化合物能给出红茶特有香气。