Spaghetti Sauce (The Best)

Ingredients

• • 1 1/2 lb (675 g) sweet or spicy Italian sausage (ideally a mixture of both), casing removed
  • 1 1/2 lb (675 g) lean ground beef
  • 1/4 cup (60 ml) olive oil
  • 1 to 1/4 to 1/2 teaspoon (2.5 ml) crushed red pepper flakes
  • 3 onions, finely chopped
  • 4 carrots, peeled and diced
  • 4 stalks celery, diced
  • 4 cloves garlic, finely chopped
  • 1 can 5 1/2 oz (156 ml) tomato paste
  • 2 cans 28 oz (796 ml) diced Italian tomatoes
  • 2 cans 28 oz (796 ml) tomato sauce or crushed tomatoes with purée
  • 2 cups (500 ml) beef broth
  • 2 teaspoons (10 ml) dried oregano
  • 2 to 3 cloves
  • Salt and pepper