Would you believe that Jell-O has been around since 1897?  It was invented by carpenter and cough-mixture manufacturer Pearle Bixby Wait all the way back then.  Please note if you’re planning on making Jell-O shots with our wares that you should only use alcohol as up to about one third of the liquid you add to the Jell-O, the reason for which is long and complicated.  Oh, you still want to know?  Okay then; it’s because the proteins in dry gelatin consist of chains which need a hot liquid to denature them before they can reform as a semi-solid colloidal suspension, and pure alcohol cannot reach the required temperature to break down the proteins sufficiently to allow them to reform as such.  Well, you did ask.