Preheat the oven to Gas 4/180°C/Fan 160°C.
Cut the bacon into thick slices. Bring 1.2 Litre (2 pints) water to the boil. Add the bacon and sausages and leave to simmer for 5 mins. Then drain, reserving the cooking water. Place the meat into a large, deep ovenproof dish.
Arrange the onions and potatoes around and scatter over some of the parsley. Season and then pour over enough of the cooking liquid to just cover.
Tuck a piece of buttered grease-proof paper on top and cook in the oven for 1hr – 1hr 15mins until the liquid has nearly boiled away and the vegetables are soft.
Scatter over some more parsley and serve with buttered greens.
** Guideline Daily Amounts excludes buttered greens.