Spaghetti with Wild Mushrooms

Name: Spaghetti with Wild Mushrooms
Ingredients: 9 to 11 ounces (250 to 300 grams) wild mixed mushrooms (I would probably buy around 14 ounces (400 grams) mushrooms, as you have to trim a bit off); 3 tablespoons olive oil; 1 clove garlic, finely chopped; 1 to 2 small dried red chiles, pounded or very finely chopped; Salt and freshly ground black pepper; 1/2 lemon, juiced; 1 pound (455 grams) dried spaghetti; A small handful grated Parmesan; 1 handful fresh parsley, roughly chopped; 2 ounces (55 grams) unsalted butter