Method
Heat oil 1 tablespoon of butter in a large saucepan on medium heat. Add onion and a pinch of salt and cook for 2–3 minutes until onion is soft. Add marrow and cook for 2 minutes until the marrow softens.
In a pot, heat the stock but do not boil.
Add rice and stir to coat grains. Stir in the wine and saffron, then heat until the wine has evaporated.
Add stock, one ladle at a time, allowing liquid to absorb between additions. Add a splash of the reserved porcini mushroom liquid and the mushrooms. Stir continuously until the rice is cooked, about 16-18 minutes. It should have a creamy consistency but still firm to bite. Remove from heat.
Drain pasta al dente and toss in the pan for 1–2 minutes until pasta and sauce are well combined.
Add the cheese and remaining butter and stir to combine. Stand for 2-3 minutes. Risotto should be creamy and runny; if not, add a little more stock. Serve.
Join Chef Luca and cook this delicious recipe from his TV show Luca's Key Ingredient on Channel 10!