PREPARE THE MEAT SAUCE
Preheat the frying pan or skillet over low heat.
When the pan is hot, add 2 tablespoons of oil and increase the heat to medium low. Sauté the onions with a wooden spoon until they are translucent, add the meat and continue to sauté until lightly browned. Add tomatoes, 1/2 the breadcrumbs, salt, pepper, garlic, cinnamon, bay leaves, allspice, wine, and tomato paste and mix well. Reduce heat, cover, and simmer until all the liquid has been absorbed, about 45 minutes to an hour. If there is still liquid in the pan, continue to simmer uncovered until the mixture is as dry as possible, stirring to prevent sticking. When dry, remove the bay leaves and cinnamon stick (if used), and set sauce aside uncovered until ready to use.