Roast Ribs of Aberdeen Angus Beef (with a Confit of Whole Garlic and Shallots) recipe | Delia Smith

Ingredients

• a three-rib piece of trimmed sirloin of beef (about 2.7kg)
• 1 small onion, peeled and halved
• 1 dessertspoon mustard powder
• 1 dessertspoon plain flour
• 425ml red wine
• freshly milled black pepper
• 1 heaped tablespoon plain flour
• 570ml vegetable stock (from potatoes or other vegetables)
• 300ml full-bodied red wine