Wash the prawns and peel them, except for the tail fin. Cut the prawns lengthwise on the back and remove the intestines. Wash and drain the sprouts. Boil 400 ml water, 1 scant teaspoon of salt and saffron in a pot. Add rice and simmer covered over low heat for 10-12 minutes. Heat the fat in a pan and fry the prawns for about 2 minutes, turning them over. Add the sprouts, fry briefly and stir in the Asian sauce.
Remove from the pan. Place the vegetables in the pan without defrosting them and fry over a high heat for approx. 4 minutes. Fry over medium heat for 4-6 minutes, stirring occasionally. Finally, add the prawns and sprouts to the vegetables and warm up briefly. Season to taste with soy sauce and cayenne pepper and serve with the saffron rice. Sprinkle with coriander green and garnish as desired