Preparation time: 30 mins
Peel the onions and cut them into thin slices. Heat up the oil in a pan. Sauté the onions until they turn golden brown. Trim the mushrooms and cut them into approx. 3 mm thick slices. Chop the bacon and fry in a pan with the oil. Add the mushrooms and continue cooking. Add the chicken stock and the sautéed onions and bring to the boil. Then season with the naturally brewed soy sauce and sugar. Put the soup into a cup (or bowl) and top with a tablespoon of sour cream. Garnish with chives.