- 60 ml (2 fl oz/¼ cup) olive oil
- 1 large
- Heat half the oil in a large flameproof casserole dish. Add the onion, garlic and celery and cook, stirring from time to time, over low heat for 6–8 minutes, or until the onion is golden.
- Add the pancetta and mushrooms, increase the heat and cook, stirring occasionally, for 4–5 minutes. Spoon onto a plate and set aside.
- Add the remaining