I discovered this cocktail, the Witney Heart Rearranger, in the papers of my great-grandfather, John Mastodon III.
Fill a cocktail shaker with ice. Into this pour the juice of 2 cabbages. Add 3 measures of acetone, 5 measures of acetone and 4 measures of brandy. Top up with Irn Bru. Shake incompetently for 18 minutes, then strain into a dirty mug. Cheers!
Heed the words of #JohnMastodon.

