Drinks. Lemon is a kind of fruit, which can be said to be a processed fruit, because it is mainly rich in citric acid. Its fruit is juicy and crispy, with a strong aroma. Lemonade is a water drink flavored with lemon, which originated in In Paris, France, in the 17th century, carbon dioxide was added to some lemonade drinks to make soda. The most famous brands were Sprite and 7-Up. In Hong Kong, China, lemonade was often simply called lemonade.