Bolognese over Spaghetti or Zoodles

Ingredients

• 1 tbsp olive oil
• 3 tablespoons butter plus 1 tablespoon
• 1/2 cup chopped yellow onion
• 1/4 cup chopped celery
• 1/4 cup chopped carrot
• 1 lb ground beef
• 1 lb ground pork
• 4 oz pancetta, chopped
• Salt and pepper to taste
• 1 cup whole milk
• 1/8 tsp Ground nutmeg (optional)
• 1 cup dry white or red wine (or any type of stock/broth)
• 1 (28oz) can of chopped tomatoes with juices
• Freshly grated parmigiano-reggiano cheese for serving
• 12 oz of dried spaghetti (or other favorite pasta)