Based on a wonderful recipe from McCall's Cooking School, Meat #22. The intro says, "Lamb and beans the French way. To most Americans, accustomed to pork with their beans, lamb with white beans is an unusual combination. But it's an everyday meal to the French, particularly those from Brittany. The beans are cooked until tender, combined with garlic, onion, herbs and plum tomatoes, then cooked again for several hours with the lamb. We like our roast lamb fairly well done, while the French prefer it pink. A meat thermometer is a great help in roasting it to just the right degree."