2 lebanese cucumbers, seeded and cut into 1/2cm cubes
1 birdseye chilli, seeded and thinly sliced
Dressing:
Juice of 2 limes (or 4 tablespoons)
1 tablespoon fish sauce
1 tablespoon brown sugar
Mix all the salsa ingredients together in a bowl. Mix the dressing ingredients in a small bowl and stir to dissolve the sugar. Pour the dressing into the salsa and serve with the king prawns on a banana leaf and with extra lime wedges.