Peel and finely chop the onion. Heat the oil in a pot. Fry the onions in it until transparent. Add rice and fry briefly. Add wine and half of the broth, bring to the boil and cook covered over a low heat for 20 minutes. Add the rest of the stock little by little, stirring from time to time. Clean, wash and slice the mushrooms.
Cut ham into thin strips. Heat butter in a pan. Fry the mushrooms in it. Season with salt and pepper. Add ham. Add mushrooms, ham and peas to the risotto 5 minutes before the end of cooking time. Wash parsley, chop finely and add to the risotto