Combine half the chicken stock and the saffron threads in a small pan and bring to a simmer to draw the flavor, color, and aroma from the threads into the stock.
In a medium-sized pot, gently heat the oil and stir in the onion, taking care to get each piece coated with oil. Cook gently, stirring frequently, until the onion is soft and translucent; do not let it brown. Add the rice, stirring carefully so that it’s well distributed with the onions. Increase the heat to medium-high and cook, stirring occasionally, for 3 to 4 minutes, to gently toast the rice. Stir in the wine and take the heat back down to medium-low. Continue to cook, stirring regularly, as the rice eventually absorbs all the wine and the alcohol smell can no longer be detected.
To this mixture, add a ladleful of the warm saffron-infused stock. Continue to stir and add more stock as it becomes absorbed, eventually also adding the reserved, non-infused chicken stock, a ladleful at a time. Once or twice before all of the stock is absorbed, check the rice for its state of doneness: at the end, it should yield to the bite and be cooked all the way through, but still maintain its structural integrity.
Now, assess the texture of the risotto. Is it runny enough to cover the bottom of a bowl without coaxing? If not, stir in a little more stock until it’s the correct consistency.
Now, add the butter chunks and the cheese and beat it with a light hand into the hot rice, incorporating some air and lightening the consistency somewhat as you go. Taste the risotto and season with salt if necessary. Serve immediately with the osso buco (see recipe in book).
Serves 6 as a side dish.
Recipe by The Geeky Hostess at https://geekyhostess.com/hungry-ghosts-saffron-risotto/