Poached Banana Prawns

• 8 banana prawns, about 40 g (1½ oz) each
• 16

Peel the prawns and remove the heads. Discard the heads and shells or reserve for another application. Using a sharp knife, cut down the back of the prawn and remove the intestinal tract. Continue to cut through the back of the prawn until two-thirds of the way through. Lay a 25 x 25 cm (<