##Peel and finely dice onion and garlic. Clean or wash the vegetables and cut into small cubes. Clean mushrooms, possibly wash and halve. Boil 1 1/2 - 1 3/4 l water with broth.
Heat the oil in a pot. Brown the onion, garlic, ##carrots##, zucchini and mushrooms. Add rice and fry briefly. Add wine and simmer until all liquid is absorbed.
Add the stock until the rice is covered, and add stock again and again as soon as it is absorbed. Simmer open for 25-30 minutes in total.
Grate parmesan. Add frozen peas to the risotto for the last 5 minutes. Stir in parmesan and butter. Season to taste with salt and pepper and serve.