Along with wheat and barley, proso millet is one of the oldest crops. It originated from China, East Asia and India. In itself, proso millet, like other grains, is rich in carbohydrates, which keep us full for a long time thanks to their slow release (it's popular due to its low glycemic index and fibre content). Proso millet is gluten free, making it popular among people suffering from celiac disease. Did you know that millet is peeled proso millet?