Sweet and Sour Chicken(甜酸鸡肉)

Ingredients

Chicken - 1 to 1.5 lbs, boneless, diced to 1 inch pieces
Corn starch - 3 TBSP
Salt and pepper, to taste
Olive oil - 3-4 TBSP

[Sauce]
Sugar - 3/4 cup
Apple cider vinegar 1/2 cup
Ketchup -1/4 cup
Soy sauce - 2 TBSP
Sesame oil - 1 TBSP
Brown sugar - 1 TBSP packed
Garlic powder - 1 tsp

Cold water - 2 TBSP
Corn starch - 1 TBSP
[Garnish]
Green onions, chopped, optional
Sesame seeds, optional

Steps

1. In a large Ziploc bag, add the chicken, cornstarch, salt and pepper to taste, seal, and shake to coat chicken evenly.

2. In a medium saucepan, add all ingredients for sauce except water and cornstarch, whisk to combine, and bring to a boil over medium-high heat.
3. In a small bowl, add the water, cornstarch, and stir to combine.
4. Add the water and cornstarch mixture to saucepan, reduce heat to low, and allow sauce to simmer for about 5 minutes while you make the chicken; whisk intermittently.

5. In a large skillet, add oil and chicken, and cook over medium-high heat for about 5 to 7 minutes, or until chicken has cooked through. 

6. After chicken has cooked though, reduce heat to low, add the sauce, stir to coat evenly, and allow it to simmer for a minute or two.
7. Optionally garnish with green onions, sesame seeds, and serve immediately.