Mason Jar Stir-Fry Sauce:  To make the process even simpler, dress it up or down with additional seasonings, like ginger, garlic, Sriracha, sesame, chili, etc. 1 ¼ cup soy sauce 1 cup oyster sauce 1 cup maple syrup (Use the real stuff. If you only have maple flavored syrup, use brown sugar to taste instead.) ½ cup rice vinegar ¼ cup dijon mustard, to taste.