Prawn Green Curry

Peel the prawns, slit each one down the back and remove the veins. Cut the green beans into 3cm pieces. In a hot wok with oil, add the chopped onion and curry paste. Cook for 1 min, add the coconut milk and water. Let it boil. Simmer for 10 minutes. Add the prawns and cook for 5 min, until pink. Season with fish sauce, lime juice, zest, and sugar. Sprinkle with fresh coriander. Serve it with steamed jasmine rice.