Top chef’s surprising recipe. BBCnews channel. Aug 4, 2008. Anthony Worrall Thompson has mistakenly suggested a dangerous poison, henbane, for inclusion in recipes. Watch video.  Chef sorry for poison advice. TV chef Antony Worrall Thompson has apologised after he recommended the use of a poisonous plant in a magazine interview. Antony Worrall Thompson explains his mistake to Andrew Verity on BBC Radio 5’s Five Live Drive programme. Listen.