On medium heat, add oil, butter, onion, until translucent.
Add celery, carrots and cook on low until all is caramelized. This will add a lot of flavor. Once cooked, remove to a bowl. Set aside.
In the pot you will be making the bolognese, cook meat. Sautè chopped pancetta or peppered salami. Salt meat. Add ground meat and satue Sautè meat separately until cooked completely.
Add milk until cooked through on low about 10 minutes.
Add nutmeg.
Add the vegetables and mix through.
Add the white wine and cook for about 10 minutes until alcohol is cooked off.
Add the tomatoes, crushed with your hands.
Add chicken stock. Cook on low for 3 hours and add more stock as necessary.