Dried mushrooms boil until cooked. Mushrooms remove from broth, cool. Strain the broth.

Lentils, rinse and boil until tender. I cook this soup with red lentils. (cooks very quickly and easily cooked)

Mushrooms are cooling, lentils cooked. At this time, the onions cut into small cubes and fry in vegetable oil until transparent.

Add to the onions diced not very large mushrooms and fry all together until cooked mushrooms. (5-7 minutes)

Pour the mushroom broth in a saucepan and add boiling water to make 1.5 litres. The thickness of the soup and adjust to your liking. If you prefer thick soups, reduce the amount of water. Put into the pan fried mushrooms with onions, boiled and chopped dried mushrooms. Add the lentils. Bring the soup to a boil, season with salt to taste. Cover, remove from heat and let stand the soup for about 15 minutes. You're done! Serve the soup with sour cream.