Characters
I've got it! I've got it! The pellet with the poison's in the vessel with the pestle; the chalice from the palace has the brew that is true! Right?
— Hawkins · The Court Jester

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Working something out aloud, the speaker announces a discovery and recites a rhyming riddle about which vessel holds the poison and which holds the true brew. The tongue-twisting chant ends with 'Right?', turning triumph into a request for confirmation.
Context reviewed