olive oil (120 ml) • onion, finely chopped • green onions, finely chopped • white mushrooms, sliced (400 grams) • portobello mushrooms, sliced (400 grams) • oyster mushrooms (200 grams) • medium-grain rice (about 3.5 oz or 100 grams) • dill, finely chopped • fennel fronds, finely chopped • chervil, finely chopped • water or homemade vegetable broth (1 liter) • Juice of 2 lemons •