es o no es

isn't it, right, am I right (used as a rhetorical question to seek agreement, confirmation, or validation from the listener); ain't that the truth, exactly (used as an emphatic standalone interjection to agree with someone else's statement, often spelled eonoé)

“Este bar tiene las mejores tapas, ¿es o no es?” — This bar has the best tapas, am I right?

Literally, "es (“is it”) o (“or”) no (“not”) es (“is it”)".