1-1/2 pounds potatoes (about 3 medium), cut into 1-inch cubes
2 large carrots, thinly sliced
1 tablespoon white vinegar
Hot cooked brown rice, optional
Sprinkle beef with salt and pepper; toss with flour. In a Dutch oven, heat oil over medium heat; cook beef and onion until lightly browned, stirring occasionally. Stir in curry powder, soy sauce, bay leaves and stock; bring to a boil. Reduce heat; simmer, covered, 45 minutes.
Stir in potatoes and carrots; return to a boil. Reduce heat; simmer, covered, until meat and vegetables are tender, 1 to 1-1/4 hours, stirring occasionally. Remove bay leaves; stir in vinegar. If desired, serve with rice.