Place all plum sauce ingredients in a small pot, bring to a boil and then cook for about 1 - 2 more minutes.
Debone the duck meat and set aside.
Peel the pomegranate and extract the seeds. Peel the mango and cut into pieces.
On a plate, arrange the arugula and mixed greens, season with salt and pepper, place duck pieces and mango and sprinkle with pomegranate seeds. Drizzle with plum sauce.