These are very strong Jello shots, with 3/4 oz. (22 ml) or 1-1/2 oz. (45 ml) of vodka in each shot, respectively. Eat them responsibly.
Start with a 3-ounce (85 g) package of Jello. Lime and orange flavors are ideal, as they will taste similar to vodka-based mixed drinks. Cherry may leave your Jello with a flavor reminiscent of cough syrup. Berry blue and grape are not recommended either.
Mix the powder with 1/2 cup of boiling water. Don’t skimp on this step—the water needs to be actually boiling to effectively dissolve the powder, and the mixture won’t set if you use less than 4 oz.
Stir the mixture until the powder is completely dissolved.
Add 1-3/4 cup of 80-proof vodka to the mixture. You can actually add up to 2-1/4 cups of 80-proof vodka and the Jello will still set. However, anything more than 1-3/4 cups will cause the gelatin to get soft and slimy, and the liquor will overwhelm all of the other flavors.
Pour the mixture into cups. If you used 1-3/4 cups of vodka, you will be able to make eighteen 1-oz. (30 ml) shots, or nine 2-oz. (60 ml) shots.