The term Chinese Restaurant Beverage can be summarized as a three letter word: TEA. TEA is a popular beverage in Chinese restaurants, and has been for centuries. It is believed to have originated in China, and is now enjoyed around the world. TEA is made from the leaves of the Camellia sinensis plant, and can be served hot or cold. There are many varieties of TEA, including green, black, oolong, and white.