Celery Pepper Chicken

1 lb boneless, skinless chicken thighs or breasts
1/2 tbsp corn starch
2 tsp fresh cracked black pepper
 salt
1 large yellow onion, diced
4 cups chopped celery
Sauce:
3/4 cup chicken stock
1/4 cup soy sauce
3 tbsp white vinegar
2 tbsp olive oil
1/2 tbsp corn starch
1/2 tbsp fresh cracked black pepper
Rice

Preheat a cooking pan over medium-high heat and add a couple of tablespoons of oil for cooking.
Chop chicken meat into small pieces and place them in a small mixing bowl.
Add 1/2 tbsp of corn starch, 1 tsp black pepper, and some salt. Mix very well so that the chicken is coated in corn starch, salt, and pepper evenly. Set aside.
Dice onion and celery and saute for a few minutes.
Once veggies are softened, add chicken and mix well. Saute chicken until about half way cooked.
While chicken is cooking, whisk ingredients for the sauce in a small bowl.
Add sauce into the pan with the chicken, stir well. Bring the sauce to simmer and lower the heat to medium-low.
Stir and cook chicken and veggies until chicken is completely cooked. Take off heat.

via: https://www.willcookforsmiles.com/copycat-pepper-chicken-and-rice/#wprm-recipe-container-19774