Roast lamb with potatoes & garlic

Arnaki sto fourno me patates is the Greek equivalent of the Sunday roast. There is a difference, though, in the way a Greek roast is cooked. In the old days, homes did not have ovens, so the food was sent to the local baker in the morning and collected at lunchtime. It was essential to have everything in a single dish, so the meat and potatoes were arranged in a large aluminium container and sprinkled with olive oil and herbs before being taken to the baker. He would add water to kee