Radicchio and Gorgonzola risotto

Name: Radicchio and Gorgonzola risotto
Ingredients: For the vegetable stock; 1 celery stalk; 1 carrot; 1 white onion; 1/2 leek; 3 cloves; 8 blck peppercorns; 3 sprigs parsley, stalk included; 1 bay leaf; 1 sprig thyme; Risotto; 1 cup Carnaroli Rice; 1 medium gold onion chopped very finely; 1/4 cup white wine; 5 tablespoons Extra Virgin Olive Oil; 1 Radicchio, washed and cut into strips; salt; 2 tablespoons butter, soft and cut in small pieces; 3 tablespoons grated Parmesan cheese; 3 tablespoons Gorgonzola