Heard about this before, but didn't realize the effects of this just hadn't worn off and they were still somehow exotic in parts of the US? They're very common

Heard about this before, but didn't realize the effects of this just hadn't worn off and they were still somehow exotic in parts of the US? They're very common in Canada. Have a row of them on my hobby farm in southern Ontario. My wife makes a casual $100 or so a year picking them and selling to local eastern European immigrants. Grew up with currants and gooseberries all the time in central Alberta, where they grow tastier in the more northerly climate, in my opinion.