Black bread is a staple food on the table of Russians. At first glance, it looks like a Chinese sorghum noodle, cut into pieces, taste a bit sour, and a bit salty, Chinese people generally start to eat not used to it, people who don't understand the situation even think it is coarse food. In fact, black bread can be full and nutritious, but also easy to digest, is very beneficial to the stomach, especially suitable for fish, meat and other leeks. This is because the wine mother for black bread fermentation contains a variety of vitamins and bioenzymes.