Pour olive oil in a deep pan. Set to medium heat and sauté the onion, garlic, celery, and carrots for 10-15 minutes, stirring occasionally.
Increase heat to medium-high and incorporate the beef and pork into the pan. Cook for about 15-20 minutes, or until the meat turns brown. Continue to stir occasionally.
Add the portobello mushrooms and stir. Cook for about 5 minutes.
Add the oregano and bay leaves. Stir.
Add the wine and cook until the liquid mermes to half.
Add the tomato paste and stir. Then add water and stir. Bring it to boil.
Once boiling, lower the heat. Add salt and pepper and let it cook uncovered for one hour. Use more water as needed.
Correct the seasoning.