Feb 19, 2020 · How to Make Sweet and Sour Chicken. Batter the Chicken: Whisk cornstarch, flour and salt together with egg, oil and water in a bowl (it’ll be as thick as pancake batter). Then cut the chicken into 1-inch pieces and coat thoroughly in the batter. Optional: For extra tender chicken, marinate in the fridge for one hour before cooking, although even 10 minutes will make a difference. TipBuzz has delicious recipes with helpful tutorials and tips! Explore appetizers, main courses, side dishes, desserts and more.