Crossword Genius

Lorraine's regional associate (6)

Ross

I believe the answer is:

alsace

I'm a little stuck... Click here to teach me more about this clue!

This clue could be a double definition.

'lorraine's' is the first definition.
The definition and answer can be both locations as well as being singular nouns.
Maybe there's a link between them I don't understand?

'regional associate' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

Can you help me to learn more?

(Other definitions for alsace that I've seen before include "Filled pastry" , "source of French wines" , "Riesling-producing region eastern France" , "Region of France famous for white wine" , "Laces a province in France" .)

I've seen this clue in the Evening Standard.
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