European Kitchen - Roast with brown and orange sauce

Recipe Ingredients:

1 piece of roast beef

2 tablespoons butter

2 tablespoons oil

1 carrot

1 celery stalk

2 onions

6 cloves garlic

1 tablespoon orange zest

2 bay leaves

1 cinnamon stick

Salt and pepper

1 teaspoon paprika

A pinch of nutmeg

1 cup cream

1 tablespoon mustard

For serving:

Vegetables as desired