I started by dicing the chicken into bite-sized cubes. This made cooking faster and gave a nice texture when coated with sauce. I seasoned them lightly with salt and pepper so the meat had flavor even before the sauce went in.
In a bowl, I whisked together soy sauce, brown sugar, garlic, ginger, rice vinegar, and sesame oil. Separately, I mixed cornstarch with water to form a slurry. Adding this to the sauce helps it thicken into that glossy texture we all love.
I heated some oil in a non-stick pan and added the chicken pieces. Cooking them for about 3–4 minutes per side made them golden brown outside and juicy inside. It smelled amazing at this stage.
Once the chicken was ready, I poured in the teriyaki sauce mixture. Within minutes, the sauce started bubbling, thickening, and coating the chicken beautifully. I let it cook for 2–3 minutes more until it looked shiny and rich.
To finish, I sprinkled chopped green onions and sesame seeds on top. It added crunch, freshness, and a little visual pop. Honestly, this step made the dish look as good as it tasted.