Luke Mangan's hearty beef stew Asian-style

Ingredients

• 2 litres light beef or vegetable stock
• 3 pieces whole star anise
• 1 stick of cinnamon
• 10 whole cloves
• 1 teaspoon whole black peppercorns
• 3 tablespoons thick black soy sauce
• ½ cup light soy sauce
• 3 tablespoons oyster sauce
• 2 tablespoons chinese cooking wine
• 8 dried shitake mushrooms (pre-soaked and cut)
• 1 whole head of garlic (unpeeled)
• Small piece of dried tangerine peel (skin)
• salt to taste
• 1 leek
• 1kg beef brisket cubed
• 1kg beef ribs
• 500g gravy beef
• Garnish: spring onions and fresh coriander