2 Bash core of iceberg on the kitchen bench to loosen the core. Pull core out of lettuce. Place lettuce under cold running water to loosen leaves. Carefully pull leaves out and drain well.

3 Arrange lettuce leaves in individual serving bowls. Divide prawns, avocados, mangoes and cucumber among bowls.

4 To make thousand island sauce, place all ingredients in a blender. Blend until smooth. Pour into a bowl.

5 To serve, sprinkle combined capsicums, onion and parsley over prawn salads. Serve with thousand island sauce.

Hint: Sauce can be made up to 2 days ahead. Simply refrigerate until serving.