Nice photos, as usual. They look like what we call acuminata but I don't remember now how we discarded nitida.
Cola was brought to Caribbean CR by Jamaicans. They don't chew the nut like the Africans but instead make a drink they call 'busy tea'. They don't know the name cola either but refer to it as, 'Busy nut'.
The tea is with milk and sugar, so the bitterness is cut.
Another thing about busy nut is that it is used against 'poisoning' which seems to refer to using it to counter an evil spell.
We have trouble harvesting much cola nut because a local animal, the agouti, is very fond of it.
The aril is palatable.
Peter