Boil the chicken in water with salt and pepper.
Once cooled, shred or chop and keep aside.
Chop cabbage and carrots into small dice pieces. Chop the green part of the scallions.
Add cabbage and carrots, and scallions to chicken pieces. Put in Mayonnaise and vinegar, Mix well till nice and creamy.
Add salt and pepper to taste. Your Chicken Salad is ready.