Celeriac gratin with cinnamon and onion confit

This is a great vegetable speciality for the winter months. The sweetness of the onions and cinnamon brings out the lovely flavour of the celeriac. The onions need to cook on a very low heat until the sweetness comes through and they become very soft and almost melt. In my opinion, celeriac is not used as much as it should be, it’s a very healthy root. Don’t be put off: when you see it, it may look like a hairy mine, but inside you will find a beautiful white purity of flesh. If you slice c