Combine the minced chicken and pork with the water chestnuts, sesame oil and cornflour. Season with soy sauce, salt and pepper.
Cut the seaweed into 3.5 cm/1½ inch wide strips. Place about 1 tablespoon of the chicken mixture on each strip of seaweed and roll up, then tuck in the edges and seal the end with a little flour and water paste. Dip the ends of each ro