Start by frying the chicken. Wash 1 pound (500 g) boneless chicken breast and pat them dry using a kitchen tissue. Cut it into small bite-size cubes. Add ¼ cup cornstarch, ¼ cup all-purpose flour, 1 teaspoon ginger garlic paste, ½ teaspoon salt, and ¼ teaspoon pepper powder in a medium-size mixing bowl and mix well.
Add the cubed chicken pieces to the bowl and coat them nicely with the flour mixture.
Heat vegetable oil for frying in a pan. Once the oil is. hot, drop the chicken pieces in the hot oil and fry until crisp and golden brown from outside.
Drain and keep aside.
Note – If you want extra crispy chicken, then you can double fry it. Fry the chicken once until lightly browned and cooked. Drain it on a plate. Now heat the oil until it is very hot. Drop the fried chicken in batches and fry on high heat until nicely browned and super crispy. Drain on a plate.
Note – Instead of deep-frying, you can either bake the chicken or air fry it. Line the coated chicken on a large baking tray in a single layer and spray with oil. Bake for 20-30 minutes at 350 degrees F until the chicken is browned.
To make the sauce, heat 3 tablespoon vegetable oil in a wok.
Add 2 tablespoon chopped garlic and 2-3 chopped green chilies and fry for 3-4 seconds on high heat.
Add 1 large onion (cubed) and 1 cup cubed mixed bell peppers and fry on high heat for a minute.
Now add 2 tablespoon soy sauce, 4 tablespoon sweet chili sauce, 2 tablespoon red chili sauce, 2 tablespoon tomato ketchup, 1 tablespoon rice vinegar, salt to taste, and ½ teaspoon ground black pepper to the wok.
Mix 2 tablespoon cornstarch in 1 cup water to make a slurry and add it to the wok. Cook for a minute or till the sauce thicken and the cornstarch is cooked. Add more water if required.
Add the fried chicken and 1 cup cubed mango pieces and give it a mix.
Serve immediately with steamed rice or boiled noodles.
If you want to serve it later, do not add fried chicken and mangoes to the gravy. Keep them aside and mix just when ready to serve. This will keep the fried chicken crisp and mangoes from going mushy.