פירוש על עבודה זרה 78:8

The rabbis likely are making a pun here on a Greek word, connecting it with salt eaten at Roman parties. We should note that the meaning of both the original word and the word for “Roman guests” is not entirely clear.

This baraita discusses the various reasons for why this type of salt was prohibited—the question is whether forbidden fish was mixed in with it. The other reason may be that it was smeared with pig fat.