Bring 1 1/4 l water and stock to the boil and keep warm. Peel and finely chop the onion. Heat 1 tablespoon butter in a pot. Sauté the onion in it until transparent. Add rice and steam for about 5 minutes
Pour on approx. 1 ladle of broth. Let the rice swell at low heat while stirring frequently. When the rice has completely absorbed the liquid, repeat this process (approx. 20 minutes) until all the stock is used up. Seasoning
Finely grate the Parmesan cheese, dice the rest of the cheese finely. Fold in 1 tablespoon butter, cheese cubes and half of the Parmesan cheese, let it melt. Sprinkle with the remaining Parmesan and serve immediately
A risotto can only succeed with the right rice variety, and this is a medium-grain rice, as cultivated in the Po Valley, the largest rice growing area in Europe. are very good: Arborio, the most famous variety, but also Vialone nano and Superfino Carnaroli