Guaraná Antarctica is a popular Brazilian soft drink that originated in Rio de Janeiro. It is made from the guaraná fruit, which is native to the Amazon rainforest. The drink has a sweet and slightly tangy flavor, similar to a fruity soda. Guaraná Antarctica is often enjoyed as a refreshing beverage on its own or used as a mixer in cocktails. It is widely available in supermarkets, restaurants, and bars throughout Rio.