Sour gummy candies are simple to grab from the store, but they're also easy to make at home—and, you can customize to your taste by choosing your own flavors and shapes. This simple recipe is made with unflavored gelatin, flavored Jell-O, and Kool-Aid. It is the Kool-Aid that contributes the sourness; make sure you buy unsweetened which will be mostly citric acid. Try to match complimentary Jell-O and Kool-Aid flavors and colors for the best taste and appearance.

You can use any shape candy mold to make the gummies. If you do not have candy molds, you can simply make the sour gummy candies in a pan and then cut them into squares or use cookie cutters to turn into your desired shape. Another option is to make them in ice cube trays or any other silicone mold you may have around the house.