Stir the chopped prawns into the yoghurt mixture. Spoon the prawn and yoghurt mixture into the cavity of the avocado. Serve straightaway, garnished with fresh dill.

For the salsa, toss the avocado slices gently in a bowl with the ... in the fridge while you get on with the skewers. For the prawn skewers, cut each prosciutto slice across the width to give ...