This classic bolognese is a light adaptation of Marcella Hazan's bolognese from the famous cookbook, Essentials of Classic Italian Cooking. My version stays true to the original, but offers more detail, simplified ingredient quantities, and is slightly more tomato-forward in flavor. While the sauce is straight-forward to make, it does require at least 3 hours of simmer time, so it is a dish best planned ahead. See note section for detailed make-ahead and reheating instructions. This recipe yields one generous quart (4 cups) of sauce, ideal for tossing with about a pound of pasta. I'll often double the recipe and freeze a portion for later. Your future self will thank you!