Saffron Risotto risotto alla milanese Lombardia Primo First Course

Name: Saffron Risotto (risotto alla milanese) - Lombardia, Primo (First Course)
Ingredients: 1 teaspoon saffron; 1 liter meat broth, hot; 60 grams butter; 50 grams beef bone marrow, removed from the bone, and chopped; 1 small yellow onion, finely chopped; 300 grams risotto rice; 125 milliliters white wine; 50 grams Parmigiano-Reggiano cheese, finely grated plus more for serving; sea salt; Freshly ground black pepper