Soak the mushrooms in a cup of boiling water for 20 minutes.
Wash the chestnuts and place them in a saucepan with warm water and cook for about 20 minutes.
In the meantime, peel and chop the onion, garlic and carrot. In a large frying pan heat the olive oil and stew the onion and carrots for about 10 minutes. Finally add the garlic to cook for about a minute.
Add the lentils, water, vinegar and spices and let them simmer for about 30 minutes.
Take out and cut the mushrooms and add them to the lentils. Do not throw away the water from the boletes, pour it in as well.
Let the chestnuts cool slightly and peeled them off as quickly as possible. Add them to the lentils. When the lentils are fully cooked and the water is almost evaporated, sprinkle with fresh parsley.