Heat a wok over a high heat. Add the groundnut oil and, when prawns is very hot and slightly smoking, add the ginger, garlic and spring onions. Stir-fry for 20 secs, then add the prawns.
Heat a wok over a high heat. Add the groundnut oil and, when prawns is very hot and slightly smoking, add the ginger, garlic and spring onions. Stir-fry for 20 secs, then add the prawns.