This is the 4580th most frequent Spanish word.
auténticos
"Auténticos" means "authentic" or "genuine."
In this sentence, 'auténticos' means that the documents are genuine and true representations of what they claim to be.
Estos documentos son auténticos, no hay ninguna falsificación.
These documents are authentic, there is no falsification.
Here, 'auténticos' refers to the sincerity and genuine nature of the friends mentioned.
Los auténticos amigos estarán contigo en los peores momentos.
True friends will be with you in the worst times.
In this context, 'auténticos' describes the ingredients as those adhering to tradition and original practices.