2 tablespoons extra-virgin olive oil
1-1/4 pounds stew beef, cut into 1-inch pieces
7 large garlic cloves, crushed
1 cup red wine
1 cup Guinness
6 cups beef stock (or broth)
3 tablespoons tomato paste
1-1/2 tablespoons white sugar
2 tablespoons Worcestershire sauce
1 tablespoon dried thyme
4 bay leaves
2 tablespoons butter
1 pound russet potatoes, cut into 1/2-inch pieces (peeled or unpeeled, gentleman’s choice)
1 pound baby red potatoes, cut into 1/2-inch pieces (again, gentleman’s choice)
4 stalks celery, chopped
2 cups carrots, peeled, cut into 1/2-inch pieces
1 large yellow or white onion, roughly chopped
1 tablespoon cornstarch + 1 tablespoon water
salt and pepper, to taste