The most common and most likely answer to this crossword clue is the 13 letter word HORSERADISHES
I've seen this crossword clue in The Daily Telegraph
H
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More clues leading to the result HORSERADISHES
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HORSERADISHES mean?
HORSERADISHES noun- A plant of the mustard family, Armoracia rusticana.
- A pungent condiment made from the root of the plant.