Sour cream soup

• 1¼ l water
• salt
• a handful of dried mushrooms
• caraway seed
• 30 g risen yeast
• 50 g butter
• 1 onion
• 4 eggs
• potatoes
• ¼ l sour cream

Boil mushrooms with caraway seed in salted water. Mix yeast in a little lukewarm water and add to soup. Add chopped onion fried in butter. Put hard-boiled or scrambled eggs in a soup bowl or plate and pour hot soup and cream over them. Serve with boiled potatoes.