Heat oil in a large stock pot over medium-high heat. Add onions, celery and carrots. Saute for 5 to 7 minutes. Move vegetables to the sides; brown all sides of chuck roast. Add wine, garlic, thyme, rosemary, bay leaf, salt and pepper. Cover and simmer 2-1/2 to 3 hours, until meat is fork tender. Place roast on serving platter; cover and keep warm. Puree vegetables and cooking liquid in a blender until smooth. Season with additional salt and pepper, if necessary. Add freshly ground nutmeg. Serve with the roast. Recipe note: For a thicker pan sauce, dissolve 1 tablespoon corn starch in 2 tablespoons cold water. Return pureed juices to pan and add corn starch mixture. Bring to a boil and heat for 1 minute.