We are huge fans of cavolo nero in the Hayden household, and have taken to calling this popular method of blitzing the cooked leaves “monster sauce”. It’s a well-known method that I learned while working with Italian chefs to celebrate in-season cavolo nero and new season extra-virgin olive oil, keeping the sauce as simple as possible to let each of them sing. You can serve this sauce however you like: I often stir it through pasta for a quick dinner, but when I have more time, I stir it through a white risotto. Finish with an additional drizzle of good extra-virgin olive oil: heaven.