OK, I got some more info from my Dad (just called him)
He said I have to ask my Grandmother she 103 living in Kentucky, I doubt she'll remember.
He said the part of Cuba where he was from made this drink it's not clear there's any placenta in there.
3 different kinds of rum and made by the 5 gallon batch.
essentially there might be traditions with similarities in other ethnic groups especially those based from Europe so that's why I posted it here.
A good thread to start would be traditional baby born brews or liquors