Balinese chicken curry

Name: Balinese chicken curry
Cook time: 1 h
Total time: 1 h
Cuisine: Asian, Indian
Ingredients: 4cm piece of ginger; 4 cloves of garlic; 1 bunch of spring onions; 2 fresh red chillies; 40g cashew nuts; 4 lime leaves; 1 teaspoon ground turmeric; 2 teaspoons fish sauce; 300g oyster mushrooms; 1 ripe mango; 3 x 200g skinless free-range chicken breasts; olive oil; 500g fine green beans; 2 limes; 1 x 400ml tin of light coconut milk; 450g basmati rice; 250g purple kale; 2 sticks of lemongrass