Guarana

The guarana berries have an extremely high caffeine content and give you a lot of energy. We can buy guarana juice on the street here, lots of people drink it. But the students have discovered the guarana soda that's sold in all the stores and restaurants. It's delicious, sweet and light, a little like ginger ale without the tang. They make a diet version, and even the coca cola company is in the game here with their own version.