Modded this one heavily. Was looking for a dark, sweet, and deep flavored marinade with a chinese punch. Here is what I did to it. And man was it good.
1 cup soy sauce
1 tbsp cinnamon
3/4 cup brown sugar
9 tablespoons dry sherry
2 tbsp flavored rice wine vinegar
6 tbsp fridge garlic, heavily minced
3 tbsp ginger or hot pepper flavored olive oil
3 tbsp sesame oil
1/4 cup Hoison Sauce
1/4 cup Plum Sauce
Makes a lot more marinade, as when I make a thing, I make a lot. Thicker too. Just my 2 cents.