Lemongrass and coconut braised beef ribs

Ingredients

• 1.2kg rack beef ribs
• all purpose flour, for dusting
• 1 tablespoon vegetable oil
• 2 stalks lemongrass, white part only, chopped
• 5cm ginger, sliced
• 5cm galangal, sliced
• 2 whole star anise
• 4 small dried chillies
• 2 x 270ml cans coconut milk
• 2 tablespoons brown sugar
• 1 tablespoon fish sauce
• 60ml - 1/4 cup fresh lime juice
• 125ml - 1/2 cup beef stock