Mint: Touareg tea, consists of a mixture of green teas and any variety of the Mint plants (known as nana), and is popular in the Middle East and desert areas of North Africa. See also Peppermint tea.
Pandan: Pandan, also known as screwpine, is a popular additive to green or black tea in Malaysia, Indonesia, and the Philippines.
Other flavorants
Citrus oil : Best known of this class is Earl Grey tea. They are typically a mix of black teas with blends essential oils of the citrus fruit bergamot added.
Smoke: The one type in this class is Lapsang Souchong, which is produced by drying black tea over smoking pine needles, which produces a striking smoky odor and flavor. The best varieties are not overwhelmed by the smoke, but retain subtlety and a mix of other flavors. Lapsang Souchong is found in many Russian Caravan blends.
Roasted grain: Genmaicha, a Japanese tea with roasted rice added to green tea, and favoured by adherents of a macrobiotic diet. Wheat and barley are also used to blend with tea
Quince, when added to green tea, gives it a rather sweetish taste and scent.