Ragu Alla Bolognese (Bolognese Meat Sauce) - cooking recipe

Ingredients

6 tablespoons butter
1/4 cup olive oil
2 onions, chopped
2 celery ribs, chopped
2 carrots, chopped
1 lb ground beef
2 tablespoons tomato paste
salt and pepper
pecorino romano cheese, to serve

Preparation

Saute the vegetables and meat in the butter and olive oil.
Season with salt and better, add tomato paste with a bit of water to dilute.
Cover and cook on very low heat for 1.5 hours, adding hot water as needed.
I serve on medium pasta shells to capture the sauce. Serve with pecorino romano cheese.