Translation of "agraz" into English

A veces se muelen las semillas y luego se tienen en remojo hasta veinticuatro horas en sidra, vinagre o agraz (jugo de uvas no maduras).

Sometimes the seeds are ground before being soaked in cider, vinegar, or verjuice (sour grape juice) for up to 24 hours.

El resultado de todo el asunto era como si hubieran comido agraz.—Eze.

The outcome of the whole matter was as if they had eaten sour grapes. —Ezek.