Ayam masak merah (spicy tomato chicken)

Name: Ayam masak merah (spicy tomato chicken)
Prep time: 15 min
Cook time: 1 h 20 min
Total time: 1 h 20 min
Yield: 6 portions
Ingredients: 1 tsp ground turmeric; 2 tsp salt; 1500 g chicken drumsticks, skin on; 6 - 12 dried red chillies; warm water; 4 garlic cloves; 80 g eschalots; 1 stalk lemongrass; 2 ½ cm piece fresh ginger; 2 ½ cm piece fresh galangal; 220 g water; 80 g vegetable oil; 2 tbsp tamarind paste; 200 g tomato paste; 1 tbsp white sugar; 120 g brown onion