Mix all ingredients for the sauce (honey, vinegar, ketchup, sesame oil, cornstarch and water) in a small bowl, stir well and set aside.

On a separate bowl, mix egg white, flour, water, cornstarch, baking powder, oil, and salt. Stir until all ingredients turn into smooth batter.

Using a chopstick or spoon, dip the sliced chicken breast one at a time into the frying batter, and fry them until the colour turns golden brown. Rest the chicken for few minutes after frying.

On another pan, heat the sauce mixture until it thickens. Once it thickens, pour in all the fried diced breast into the pan. Mix them all until they are fully coated with sauce.