Brown bread is mainly made of rye flour. Rye has strong vitality and can grow in dry and cold climate. Russia is located in a high latitude and has a relatively cold climate, but it is just suitable for the growth of rye.

Unlike most breads fermented by yeast, black bread is fermented by hops. The main raw materials are wheat flour and rye flour, and wheat germ and bran are added. The production process takes a long time and the production procedure is very complicated, usually taking 3 days.

Because the raw material contains wheat bran, the color of the bread will appear a little black, a bit like the corn bread with sorghum flour in China. People who haven't eaten brown bread usually can't adapt to its salty and sour taste for the first time, but Russians love it very much, and they often dip it in soup, even with vodka.