MEPHISTOPHELES
Of your known juice a goblet we require.
But for the very oldest let me ask;
Double its strength with years doth grow.
THE WITCH
Most willingly! And here I have a flask,
From which I've sipp'd myself ere now;
What's more, it doth no longer stink;
To you a glass I joyfully will give.
(Aside.)
If unprepar'd, however, this man drink,
He hath not, as you know, an hour to live.