Spiced Beef & Orange Casserole

Name: Spiced Beef & Orange Casserole
Cuisine: European, Mediterranean
Ingredients: 2 tablespoons oil; 450 gram (1 pound) lean stewing steak, cubed; 3 tablespoons plain flour; 300 millilitre (½ pint) unsweetened orange juice; 300 millilitre (½ pint) beef stock; 125 gram (5 ounce) button mushrooms; 2 teaspoon white wine vinegar; 2 teaspoon soft brown sugar; ½ teaspoon Cinnamon Powder; 1 Bouquet Garni; Zest of half an orange; ¼ teaspoon Ground White Pepper; ¼ teaspoon Sea Salt; A few strips of blanched orange peel, to garnish