Clean and wash the mushrooms and, depending on the size, halve or quarter them. Peel and finely dice the onion. Fry in hot oil. Add mushrooms and fry lightly. Add peas, pour in broth, bring to the boil and cook over a mild heat for 10 minutes.
Season soup with salt and pepper. Wash herbs and dab dry. Cut chives into small rolls, pluck chervil leaves from the stems. Spread the soup on four soup plates and sprinkle with the herbs. Cheese biscuits taste good with it