Ingredients:

4 chicken breasts* — skinned, boned
3 tablespoons cornstarch
1 tablespoon vegetable oil
3 cloves garlic — minced
5 tablespoons soy sauce — (low salt)
1 1/2 tablespoons white-wine vinegar
1 teaspoon sugar
1/4 cup water
6 green onions — cut into 1″ pi
1/8 teaspoon cayenne or to taste

Directions:

Cut chicken *(these are 1/2 breasts, as you buy them in the market) into 1 1/2 inch cubes. Lightly toss with cornstarch in bag to coat. Heat oil in skillet or wok; stir-fry chicken and garlic until lightly browned. Add soy sauce, vinegar, sugar and water.

Cover and cook 3 minutes or until chicken is cooked through. Add green onions and cayenne; cook uncovered about 2 minutes longer.

Source: justchickenrecipes.com