1.Heat a wok or large frying pan over high heat. Add half the oil; swirl to coat surface. Stir-fry pork, in batches, for 2-3 minutes or until just cooked. Transfer to a heatproof plate.
2.Add remaining oil, onion, capsicum and garlic to wok; stir-fry for 2-3 minutes or until soft. Add curry paste; stir-fry for 1 minute. Add beans, coconut cream, fish sauce and juice; stir-fry for 3 minutes.
3.Return pork to wok; stir-fry for 1 minute or until pork is heated. Add basil, then toss to combine. Serve.
Try using Thai basil; it looks slightly different from green basil; it has smaller leaves, purplish stems and a slight aniseed taste.