1.Place vermicelli in a bowl, cover with boiling water, stand 5 minutes, drain then rinse under cold water and drain again. Repeat this step with carrot strips. Peel and devein king prawns and cut in half lengthways.
2.Immerse a rice paper wrapper briefly in a dish of warm water to soften. Remove wrapper from water and lay on a chopping board. Layer a little lettuce, carrot, vermicelli and 2 whole mint leaves on one end of wrapper. Top with 2 prawn halves and roll up, turning in the sides to enclose filling and make a neat roll. Repeat this process with remaining wrappers and filling ingredients.
Rice paper wrappers are available from the Asian food section of supermarkets.Note