napoj winopodobny is a good neme for it. God knows what goes into it.
Shewolf, one of the rasons for luck of polish wines is that there are hardly any wineries and there weather conditions are less than suitable.
Some time ago I have read an article on a Polish men who was setting up a winery, but I cannot reacall where it was.
Do you want Polish wine just for the taste or are your interest more oriented on contacting somebody who actually makes wine comercially in Poland.
My brother in law can give me some clues if you are seriously interested