Peanut butter chicken curry

Ingredients

• 1 large chicken, jointed, or 1.5kg bone-in chicken pieces
• 6 garlic cloves, 2 finely chopped, 4 left wholes
• 3 lemongrass stalks, bashed and roughly chopped
• thumb-sized piece of ginger, peeled and finely chopped
• 1 tbsp ground cumin
• 1 tbsp ground coriander
• 1 tbsp ground turmeric
• 2 limes, juiced
• 2 red chillies, 1 roughly chopped and 1 sliced to serve (optional)
• 1 small onion, roughly chopped
• 2 tbsp vegetable oil
• 100g smooth peanut butter
• 4 tbsp kecap manis , or 3 tbsp soy sauce mixed with 1 tbsp light brown soft sugar
• 400g can coconut milk
• a few spring onions, chopped
• small handful of coriander, chopped
• small handful of roasted peanuts, roughly chopped (optional)