Wash the chicken fillets and pat them dry. Fry in hot oil while turning for about 10 minutes. Then cut into thin slices. Clean, wash and cut the leek into fine rings or strips.
Roast the cashew nuts in a pan without fat until golden brown. Remove. Mix yoghurt and salad cream. Season to taste with salt, pepper, sugar and curry. Carefully mix the chicken filet, leek, cashew nuts and sauce.
Serve garnished with parsley as desired.