- STEP 1
Preheat the oven to 220. Put the lamb in a large roasting tin (ideally on a wire rack) and season well with salt and pepper. Sprinkle with the oregano and pour over the lemon juice and 100 ml of white wine (Or Stock). Drizzle with the olive oil and roast for 20 minutes, or until the lamb is browned.
- STEP 2
Reduce the oven to 160 (315/Gas 2-3). Add 125 ml (4 fl oz/½ cup) of water to the roasting tin. Arrange the potato and lemon quarters around the lamb and cover the tin with foil and return to the oven for another 2.5 - 3 hours, turning the potatoes at least once during this time and basting the lamb with the pan juices. The lamb should be very tender.
- STEP 3
Remove the lamb from the tin and set aside to rest before slicing. Increase the oven to 220 (425/Gas 7). Roast the potatoes for a further 20 minutes, or until the potatoes are golden.