Risotto alla Zucca

This video is about "Risotto alla Zucca" - the original Milanese recipe.
ingredients for 4 people:
1 white onion (even a yellow one is fine)
50gr of extra virgin olive oil
2dl of a poor glass of white wine
1lt meat broth (fresh or dice broth)
750gr pumpkin already cooked and chopped as a condiment (alternatively: mushrooms, sausage, saffron, etc.)
350gr Superfino Carnaroli rice (an excellent alternative is also a parboiled rice)
25gr butter for creaming (excellent alternative Gorgonzola cheese)