In a large skillet over medium high heat pour enough EVOO to just cover the bottom of the skillet. Saute onions until soft, about 5 minutes. Add minced garlic and saute 1 minute. Add green pepper and cook for another couple of minutes.
Add ground beef and cook until beef is cooked through. If there is excessive fat rendered from the ground beef carefully pour off.
Add remaining ingredients, tomato sauce, tomato paste, vinegar, Worcestershire sauce, Dijon mustard, brown sugar oregano, salt and pepper, except lemon. Bring to a boil and then cover and allow to simmer at least 30 minutes to develop flavor.