The most common and most likely answer to this crossword clue is the 9 letter word SYLLABUBS
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result SYLLABUBS
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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 SYLLABUBS mean?
SYLLABUBS noun- A drink dating back to the 16th century consisting primarily of milk curdled with an alcoholic beverage or some acid such as lemon juice, which is usually then sweetened and spiced.
- Also everlasting syllabub or solid syllabub: a dessert pudding derived from the drink.
- Something lacking substance; something frothy, insubstantial, or lightweight.