This might sound like a strange question, comes from working too many nights stacking shelves I think, but I have always wondered why prune juice is called prune juice and not plum juice.

A raisan is a dried grape and you get grape juice not raisan juice.

Surly the juice comes from the plum not its dried state (a prune) so it sould be called plum juice right????

Strange question but its just for fun will be interesting to see what answers I get! lol