In a medium bowl combine all stir-fry sauce ingredients, soy sauce, red wine vinegar, sugar and 1/2 cup chicken broth, and mix well. Set aside.
Remove chicken from marinade allow excess to drip off. Place on a plate. Discard marinade.
Add 3 cups chicken broth to a wok or skillet. Place over medium high heat and bring to a boil. Reduce to a simmer.
Add pieces of marinated chicken. Cook until done on the outside but not quite all the way through. Remove the chicken from the pot. Drain and keep warm.
Place broccoli in the simmering chicken broth. Cook until crisp-tender. Remove and drain. Arrange in a ring on a large serving platter. Set aside and keep warm.
Discard the broth and wipe the wok clean.
Heat wok again.
Add butter.
When butter is hot, add ginger, green onion and garlic. Saute for just a few seconds.
Add prepared stir-fry sauce. Simmer for a few minutes.
Add prepared chicken. Cook until done all the way through, 2 - 4 minutes.
In a cup mix cornstarch and water. Add to the simmering wok (to thicken sauce). Mix well.
Stir in the sesame oil.
When the sauce has thickened, remove from wok and pour sauce into the center of the broccoli ring.
Serve hot.