Sorghum noodles. The black steamed bread in "Ordinary World" is made of sorghum flour, which is coarse grain, has no nutrition, tastes bad, and is dry and hard to swallow. In the novel, black steamed bread is the staple food on the table of the poor in famine years. It is far from nutrition, but it can satisfy hunger. Black steamed bread is a kind of pasta made of sorghum flour, which is round or oblate in shape.