In a bowl, combine the chicken with an egg, all purpose flour, salt, vinegar and baking soda. Mix well.
Heat oil in a pot and fry the coated chicken on medium-high heat until light golden brown. Drain and set aside.
In a jar, combine hot sauce and orange juice.
In a pan, heat oil and sauté the sliced garlic for a minute or two. Pour in the prepared orange juice mixture.
Allow the mixture to cook down and then add the fried chicken and red chili flakes.
Prepare a simple mixture of cornflour and water and pour it into the pan, stirring continuously until it thickens. Taste and adjust the seasonings.
Notes
Fry the chicken on medium-high heat and make sure the oil is hot enough before you add the chicken in, or the coating will soak up a lot of oil.
To bulk up the dish, you can add some diced veggies like bell peppers, mushrooms, broccoli and carrots into the mix too. Add them into the sauce and let them cook and soften before you add the chicken and the slurry.
To add a more pronounced flavor to the dish, you can finely mince the classic aromatics- ginger and garlic, and add them to the sauce. I like drizzling some of my homemade scallion ginger oil over the top, for some extra oomph.
Make sure you add the chicken to the pan with the sauce right when you want to serve the dish. This will ensure the coating absorbs the sauce beautifully, but the chicken still retains a bit of that crispy texture on the outside.