English translation: wine from the [Canary] island of El Hierro
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Explanation: but a shot in the dark.
I've tried all conceivable Spanish versions of "herrenisch", i.e. herrenico, errenico, herenico, etc. + grammatical varieties with Google, and it only provided names and the word 'herenica', which in my very feeble understanding of Spanish (I only really derive it from French and Latin!) seems to mean something like 'heritage'.
You might want to ask in the Sp > En subcommunity.
Could be that the German person doing the captions misunderstood something - I can't imagine that if there was a region of that name or a sort of wine in the Canary Islands that there wouldn't be at least a few Google hits with 'herrenico' or 'Herrenia' or 'Herrenica' or something like that.
Sorry, that's the best I can come up with.
beermatt Local time: 11:01 Works in field Native speaker of: German, English