Indonesian beef rendang

Name: Indonesian beef rendang
Cuisine: Indian
Ingredients: 2 lemongrass stalks; 2 large red chillies, deseeded and chopped; 6 garlic cloves, roughly chopped; 5cm piece of ginger, roughly chopped; 1 large onion, roughly chopped; ½ tsp ground ginger; 1 tbsp ground coriander; 1 tsp ground cumin; 1 tsp freshly ground black pepper; 2 tbsp sunflower oil; 2 cinnamon sticks; 12 cloves; 2 bay leaves; 600ml canned coconut milk; 1.5kg braising steak, such as chuck or blade, cut into 5cm pieces; 1 tsp salt; Walnut-sized piece of tamarind pulp or 2 tbsp lemon juice; 1 tbsp Billington’s Dark Muscovado Sugar