Maté, the sacred Paraguayan 'tea' plant, is the traditional drink of South American Indians. It is famous for its stimulating effects, since it contains up to 2% caffeine also referred to as matéine. It is typically served in a gourd called a 'calabash', with a metal drinking straw or 'bombilla'. The infusion, made from the crushed, light green leaf of the maté plant, has a mildly smoky aroma, and, when the concentration is increased, a strong bitter herbal taste that can be softened by the addition of caramelized sugar or honey. It is an uplifting drink good for keeping you awake all night.