NOTE: CHECK COOKING TIMES AND PLAN ACCORDINGLY (BEEF TAKES A WHILE TO COOK)
Heat oil in heavy large pot over medium-high heat. Add beef and sauté until brown on all sides, about 5 minutes. Add garlic and sauté 1 minute. Add beef stock, tomato paste, sugar, thyme, Worcestershire sauce and bay leaves. Stir to combine. Bring mixture to boil. Reduce heat to medium-low, then cover and simmer 1 hour, stirring occasionally. Add extra salt to taste (altho broth should be salty)

Meanwhile, chop carrots into half-inch rounds. chop potatoes into similar sized cubes. melt butter in another large pot over medium heat. Add potatoes, onion and carrots. Sauté vegetables until golden, about 20 minutes. Add vegetables to beef stew. Simmer uncovered until vegetables and beef are very tender, about 40 minutes. Add more salt if necessary Discard bay leaves. Tilt pan and spoon off fat. (Can be prepared up to 2 days ahead. Cool slightly. Refrigerate uncovered until cold, then cover and refrigerate. Bring to simmer before serving.) Transfer stew to serving bowl. Sprinkle with chopped parsley and serve.