they were "soft". They weren't even turning red or ripe!
That is confusing because it seems contradictory.
Soft is always red,ripe and edible.
So how can they be ' soft ' AND unripe?
What variety (name/hybrid/clone)of
persimmon is it?
Is it an astringent
persimmon ?
Did a shop give them to you free?
If they are not yet ripe,then why did they give them away free ,instead of waiting for them to ripen and then sell them?
It sounds like it is an astringent variety because you aren't eating them now.
Do you want to know how to put it somewhere for 24 hours so it is soft ,sweet and edible?