Heat chicken, salt and just enough water to cover to boiling; reduce heat.
Cover and simmer until chicken is done, 25 to 30 minutes.
Remove chicken from bones and skin; cut chicken into strips.
Pour boiling water over bean sprouts.
Rinse in cold water; drain.
Place chicken and bean sprouts in shallow glass or plastic dish.
Mix remaining ingredients; pour over chicken and bean sprouts.
Cover and refrigerate at least 1 hour.
Garnish with chopped green onions if desired.