Reserve the cornstarch and water when you cook the mixture initially. Those will get added after the mixture has been strained.
For 7½ teaspoons (22. 5 g) of unflavored gelatin, you’ll need three envelopes of gelatin.
To make the jello shots non-alcoholic, replace the vodka and liqueurs with water, juice, or milk.
This will prevent the jello from sticking, and make it easier to remove the brains once they’ve set.
Putting the molds on a baking sheet will make them easier to transport to and from the refrigerator.
While you’re waiting for the jello to firm up, cover the remaining jello with a sheet of plastic wrap and leave it on the counter.
You can add as much or as little filling as you like, as long as the filling doesn’t touch the mold.
The red food coloring is optional, and the brains will be just as yummy if you choose not to add it.