In the same pan with the oil, sauté the onion and bell pepper for 2 to 3 minutes. Add the garlic and sauté for 20 to 30 seconds. Mix in the ground beef, bay leaf, tomato sauce, wine, oregano, cumin, sugar, salt, paprika, and black pepper. and stir. Cook over medium-low heat for about 10 minutes, stirring occasionally. Add 2 to 3 tablespoons of water, if the mixture becomes dry.