Mary Berry serves up sprouts with chestnuts and pancetta for Christmas lunch On Mary Berry’s Absolute Christmas Favourites.

Mary says: “These spruced-up Brussels sprouts make a lovely alternative to the boiled or steamed varieties at Christmas.”

The ingredients are: 900g mall Brussels sprouts, 50g butter, 200g thinly sliced pancetta, cut into small pieces,1 onion, finely chopped, 225g frozen chestnuts, defrosted and halved and salt and freshly ground black pepper.