Bolognese Meat Sauce - With pork

2 tablespoons butter 4 tablespoons olive oil 1 medium onion , finely chopped 2 tablespoons bacon 1 carrot , finely sliced 1 stalk celery , finely sliced 1[...]

2 tablespoons olive oil 1 lb pork butt 3/4 cup diced celery 3/4 cup diced carrot 2 tablespoons garlic 1/4 teaspoon rosemary 1 teaspoon basil 1 1/2 cups[...]

1 teaspoon olive oil 1 medium onion , finely chopped 2 stalks celery , finely chopped 2 small carrots , finely chopped 12 ounces ground veal or 12 ounces[...]

2 tablespoons olive oil 3 carrots , finely diced 3 stalks celery , finely diced 1 large onion , finely diced 2 garlic cloves , finely diced 2 1/2 teaspoons[...]