Dice the onion, carrot, and celery into small cubes.
Heat olive oil in a pan and sauté the chopped onion, carrot, and celery.
Add the ground beef and cook until browned.
Add minced garlic and cook for 1 more minute.
Add canned tomatoes, tomato paste, and red wine, and mix well.
Season with bay leaf, salt, and pepper.
Simmer over medium-low heat for 30 minutes to 1 hour to complete the sauce.