Name: Beef Standing Rib Roast (Prime Rib)
Prep time: 10 min
Cook time: 120 min
Total time: 130 min
Yield: 6 - 8 people
Ingredients: 2.5 kg / 5 lb standing rib roast / prime rib (, bone in (Note 1)); 1 onion (, unpeeled, quartered (brown, yellow, white)); 1 head of garlic (, unpeeled, halved horizontally); 5 sprigs thyme; 3 sprigs rosemary; 150 g/ 10 tbsp unsalted butter (, softened); 5 garlic cloves (, minced); 2 tsp finely chopped fresh rosemary ((or 1 tsp dried)); 2 tsp finely chopped fresh thyme ((or 1 tsp dried)); 2 tsp salt; 1 tsp black pepper; 1.5 cups (375 ml) beef broth/stock, low salt; 2.5 cups (675 ml) dry red wine ((Note 2)); 1 tbsp cornflour/cornstarch ((optional, Note 3))