Authentic Ragu Modenese Recipe

Bahan-bahan (4 porsi)

• 2 tbsp Extra virgin olive oil
• 1/2 medium onion
• 1 small carrot
• 2 stalks celery
• 4 ounces Prosciutto di Parma (thinly sliced)
• 4 ounces mortadella (thinly sliced)
• 1 pound ground pork (see note)
• 1 parmigiano rind (about 2 ounces)
• 1 -2 quarts chicken stock (no sodium)
• 2 cups parmigiano reggiano cheese (finely grated)