sunday sauce recipe

Ingredients: For the Sauce: 2 tablespoons olive oil 1 large onion, finely chopped 5 cloves garlic, minced 1 pound Italian sausage (sweet or hot), sliced 1 pound pork shoulder, cut into large chunks 1 pound beef chuck, cut into large chunks 1 can (6 ounces) tomato paste 2 cans (28 ounces each) crushed tomatoes 1 can (14.5 ounces) diced tomatoes