Signature restaurant
I understand "signature" as, –adj. 11. serving to identify or distinguish a person, group, etc.: a signature tune.
(as a noun, 5. any unique, distinguishing aspect, feature, or mark.)
I would go with "restaurante distinguido" or "restaurante con solera única" or something like that.
Does anyone have a shorter Spanish version, or a better idea... or a more used one?
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