For those following a gluten-free diet, you can still enjoy Hong Kong-style sweet and sour chicken by using a food processor to create a gluten-free batter and sauce. Instead of regular flour, you can use a gluten-free flour blend or rice flour for the batter. The sweet and sour sauce can be made with gluten-free soy sauce, pineapple juice, ketchup, vinegar, and a gluten-free thickener like arrowroot powder or cornstarch. Make sure to check the labels of all the ingredients to ensure they are gluten-free. This gluten-free version of sweet and sour chicken is just as delicious as the traditional recipe and suitable for those with dietary restrictions.