1. Place chicken in a large saucepan; cover with cold water. Bring to a boil; reduce heat, and simmer until chicken is cooked through, about 25 minutes. Drain; when cool enough to handle, pull meat from bones. Shred meat into large pieces.

2. In a large bowl, whisk together vinegar, ginger, and sugar; season with salt and pepper. Whisking, add canola and then sesame oil in a slow, steady stream; whisk until emulsified.

3. Add chicken, mango, and artichokes to vinaigrette; toss to combine. Fold in watercress and mint; serve immediately.