Quinoa (Chenopodium quinoa) - the gold of the Incas. The pseudo-cereal originally comes from South America and is also known as rice millet, perureis and Inca rice. Quinoa was already cultivated as a crop 5000 years ago. It was the staple food of the Incas and is now known as a superfood. The plant is not a real grain, even though quinoa is often used as a substitute for grain cereals. There are over a thousand different varieties of quinoa worldwide, but the black, white and red quinoa varieties are the best known.