Jello shots are made by combining Jell-O or another gelatin product and a distilled spirit such as vodka or white rum. The shots are typically served chilled or frozen in small cups or shooters.
Recipes for Jello shots vary in ingredient proportions and type of alcohol used, but all recipes include a gelatin product dissolved in water and mixed with liquor. The recipe from Cooks.com instructs the preparer to start by bringing 3 1/3 cups of water to a boil and stirring in 9 ounces of Jell-O. After three minutes, the preparer stirs in 2 1/2 cups of vodka, pours the mixture into cups and freezes them.
WikiHow offers seven ways to make Jello shots, including Jello shot orange slices, layered and non-refrigerated shots. For the traditional Jello shot recipe, the preparer starts by mixing water and alcohol to make 2 cups and then chills the mixture in the refrigerator. He then boils 1 cup of water and stirs in the Jell-O powder, and then adds the chilled water and alcohol mixture. Preparers can also color Jello shots with food coloring, change the type or amount of alcohol used, and use different molds or cut-outs to customize the size and shape of the shot.