Defrost the prawns. Halve the chillies lengthwise, remove the seeds. Cut the chilli into thin strips. Halve lime and squeeze 1 half. Cut the other half into 4 corners and halve them again. Halve avocados, remove stones and remove the meat with a spoon. Puree avocados, lime juice, apple juice, 425 ml buttermilk and half of the chillies and season with salt and pepper.
Wash the prawns and dab them dry. Heat the oil in a frying pan. Fry the prawns for about 4 minutes while turning them and season with salt and pepper. Put the prawns and lime wedges on 4 skewers. Arrange the soup and add 75 ml buttermilk to the soup. Garnish with chilli and pepper and serve with the skewers
20 minutes waiting time