Place the chicken, creamed corn, corn kernels, spring onions, sesame oil, ginger, and stock into a slow cooker bowl, mix well.
Cover and cook on high for 3 ½ hours or low for 7-8 hours.
Remove the chicken from the slow cooker, use two forks to shred the chicken or you can dice the chicken. Return the chicken to the slow cooker, cover, and turn the slow cooker to high.
Place the egg into a small bowl and beat well with 1 tablespoon of water.
Remove the lid from the slow cooker and continually stir the soup with a wooden spoon, as you gradually pour in the beaten egg.
In another small bowl mix the cornflour with the water until it becomes a smooth paste. Pour into the soup and stir well.
Cover and continue to cook on high for 15 minutes more.
Taste and season with salt and pepper.
Serve garnished with finely sliced spring onions.