Possible Clues:

• Moving north, husband and dad start to breed whopping rhubarb
• Turned over great herbs I mixed? Nonsense!
• Beg Irish somehow to accept British nonsense
• Maybe a bit like someone sneering about book that's hard to understand
• Husband, father, British and fat, put about nonsense in speech
• Poorly-translated instructions? Recalled substantial error without hesitation
• Nonsensical speech