03Return lamb and any accumulated juices to skillet and add wine, chicken stock, rosemary and lemon zest. Cover and simmer over low heat for 20 minutes.04Melt butter in another skillet and toss potatoes in it over medium heat until they become golden. Remove potatoes, draining well and leaving as much of butter as possible in skillet. Add potatoes to skillet with lamb, season with salt and pepper to taste and continue cooking, covered, for 45 minutes until potatoes are tender. Lamb should also be tender by this time.05When potatoes are just tender, add peas to skillet and cook for 10 minutes longer. Meanwhile, toss scallions over medium heat in butter remaining in skillet from potatoes. Cook until scallions are tender but still bright green. Add to stew along with parsley, reseason with salt and pepper as necessary and serve.