This recipe originally came from Delia Smith's Complete Cookery Course. It has a delicious, rich sauce that is very warming on a cold winter's day. The sauce is so yummy and tends to reduce quickly so I have increased the quantity. The original recipe includes sliced mushrooms which I omit - family preference! If you wish to include them you could add them approx 20 mins before the end of cooking time. This goes well with either mashed potatoes or noodles.