This may cause concerns for people who store Earl Grey in transparent plastic containers. The other is that it contains chemicals called psoralens, which can induce sensitivity to sunlight in susceptible individuals. The sun sensitivity produces an odd darkening of the skin, which is called psoralen-induced photosensitive hyperpigmentation. Its color is very dark, almost red. This secondary oxidation sometimes is used to develop a thin layer of mold on the leaves.
White tea is tea in which buds, rather than leaves, predominate.
It is plucked from special varieties of the tea plant known as Shui Hsien and Dai Bai . Rec.food.drink.tea is a Usenet newsgroup devoted to the discussion of tea and related beverages. The FAQ was first written in 1995 and has gone through several revisions since then. As its botanical name suggests, the tea plant is a variety of camellia, and like other camellias it can be cultivated in a home garden. It is not well suited to indoor cultivation, though.