This is a reference to The Apocalyspse of Saint-John (And the angel thrust in his sickle into the earth, and gathered the vine of the earth, and cast it into the great winepress of the wrath of God)...
The term 'grapes of wrath' is a biblical allusion. There is no one element in the story that corresponds to the grapes. It is referring to a passage that talks figuratively aout God judging the...