Add olive oil to a large dutch oven on medium heat with the onions, celery and carrots.
Cook for 6-8 minutes, stirring occasionally, until the onions are translucent and celery is softened.
Add the ground turkey, salt and pepper and break it apart as it cooks until it is well browned.
Add in the nutmeg and white wine, stir well, and cook for 15-20 minutes until wine has mostly cooked off.
Add in the milk, stir well, and cook for 15-20 minutes until the milk has mostly cooked off.
Add in the diced tomatoes, crushed tomatoes, tomato paste and parmesan cheese, stirring well until well combined.
Lower heat to a low simmer and cook for 2 hours, stirring occasionally, until sauce has reduced and thickened.