Coffee as a drink, usually served hot, is prepared from the roasted seeds (beans) of the coffee plant. Due to its popularity, coffee is the second largest traded commodity in terms of dollar value in the world (after oil). The largest coffee exporting nation remains Brazil. Coffees are often blended to mutually enhance their qualities, and many standard blends exist. There are two main
species of the coffee plant, arabica and canephora.
Tea is a caffeine-containing beverage made by steeping the dried leaves in hot water for a few minutes. Tea is grown primarily in China, India, Bangladesh and Pakistan. Almost all teas in tea-bags and most other teas are blends. Tea is traditionally classified into five main groups, white tea, green tea, Oolong (black tea and red tea), Pu-erh and yellow tea.