Quinoa

Quinoa, an annual herb that grows from 3 to 6 feet high in the Bolivian Altiplano, contains more proteins than any other cereal and is particularly easy to digest as it is lighter than most grains. Referred to by the locals as a 'protein powerhouse', it kept the Incan armies strong and robust. It was one of three staple foods, along with corn and potatoes, of the ancient Inca civilization.