Clean and wash the mushroom, then finely slice them. Cook in saucepan with a little oil for a few minutes. Then add salt, pepper, a tablespoon of parsley and after removing from the heat, a few drops of lemon juice. Boil the pasta in plenty of salted water. After cooking, flavor with oil and pepper, pour the mushroom sauce over the pasta, and add a few drops of lemon and mix. Serve hot immediately.