Cut the chili pepper removing the seeds, slice the garlic, cut the ginger and onion into julienne strips and chop the coriander.
Cook the prawns in a frying pan with 3 tablespoons of sunflower oil, one minute on each side. Set aside.
Over medium heat, fry the previously chopped ingredients together with the tomato concentrate in a frying pan. Add the curry and stir.
Stir in the coconut milk and bring to a boil. Add the prawns, cook for one minute and serve with coriander and chopped cashew nuts.