One-pan fragrant duck & vegetable curry

Name: One-pan fragrant duck & vegetable curry
Prep time: 20 min
Cook time: 1 h
Total time: 1 h 20 min
Cuisine: Asian, Thai
Ingredients: 2 duck breasts; 2 tsp light brown soft sugar; 3 tbsp red Thai or massaman curry paste; 2 tsp fish sauce; 1 aubergine trimmed and cut into wedges; 500g small potatoes halved; 400g can coconut milk; 2 lime leaves (optional); 200g green beans trimmed and halved; ½ lime juiced; sliced red chillies coriander leaves and roasted peanuts or cashews, roughly chopped, to serve; cooked rice to serve