Stir-fried black pepper chicken❗️Simple but delicious

Stir-fried black pepper chicken❗️Simple but delicious

Recipe and ingredients:
2 boneless chicken legs (~600g)
2 tablespoons soy sauce
A few slices of ginger
1 teaspoon vinegar
1 teaspoon sesame oil
A pinch of salt
Black pepper
2 tablespoons cornstarch
Olive oil
1 green bell pepper
1 yellow onion