Mushroom Goulash

Name: Mushroom Goulash
Ingredients: 10 ½ ounces oyster mushrooms; 3 ½ ounces shiitake mushrooms; 3 ½ ounces mixed dry mushrooms; 3 ½ ounces tomato purée (or passata di pomodoro); 2 pieces bigger carrots; 1 piece big parsley root; 1 piece big parsnip root; ½ pieces celery root; 2 pieces red onions; 1 teaspoon mustard; 2 tablespoons spelt flour; 2 tablespoons sweet smoked paprika powder; 2 pieces bay leaves; 3 tablespoons olive oil; salt, pepper, chili powder, turmeric, basil, oregano, parsley leaves to taste; few slices of sundried tomatoes