Peel the onion and ginger and finely dice both. Roughly grate the carrot. Cut the pepper into fine strips. Heat 2 tbsp. of oil in a pan. Fry the vegetables and the ginger. Add 200 ml water. Wash the lentils in a sieve, leave to dry and add them to the vegetables. Cover and leave to simmer on a medium heat for approx. 15 mins. Stir now and again. Finely chop the washed mushrooms. Heat 1 tbsp. oil in a pan, add the mushrooms, cover and steam for approx. 5 minutes. Purée the lentil mixture and add lemon juice, cumin, dill, salt and pepper to taste. Finally, mix in the mushrooms.