In a small bowl, whisk together soy sauce, fish sauce, rice wine vinegar, brown sugar and sesame oil. In a small bowl, whisk together the stock and corn starch until incorporated. Whisk into the soy sauce mixture. Add a pinch of crushed red pepper flakes.
Heat the oil in a large wok or skillet to medium-high heat. Add chicken breast and season with salt and pepper. Cook for about 4-5 minutes, stirring frequently, until browned. Add broccoli and stir-fry vegetables and cook another 3-4 minutes, until just slightly tender. Add sauce and cook, stirring constantly, until sauce has thickened, about 2 minutes.
Serve stir fry over cooked rice or quinoa and garnish with cashews or peanuts and Sriracha.
Notes
Cooking Tip: Toasting the cashews gives a nutty flavor and crisper texture.