Massaman curry roast chicken - Good Food Middle East

Ingredients

• whole chicken, about 1.8kg
• two thumb-size pieces root ginger
• 1 stick lemongrass, bashed with a rolling pin
• 1 lime, cut into quarters
• 70g/2½ oz pack Massaman curry paste (I used Blue Elephant)
• 1 tsp olive oil
• 450g baby new potatoes, any larger ones halved
• 400ml/14fl oz can coconut milk
• 1 tsp brown sugar, any type
• 200g green beans, trimmed
• 1 tsp fish sauce
• 2 tbsp unsalted peanuts, crushed (optional)
• basmati rice, to serve