The most common and most likely answer to this crossword clue is the 8 letter word MERINGUE
I've seen this crossword clue in The Daily Telegraph
M
E
R
I
N
G
U
E
More clues leading to the result MERINGUE
- Regimen upset when eating universal sweet food item
- UN regime reformed foundation for Pavlova
- I urge men to reform; to become sweet
- No summer in guest house would be complete without this cake
- Bit of a sweet gum ‘ere, perhaps?
- Gumere, cryptically
- Sweet provided by charmer in guesthouse?
- Regimen broken eating acceptable dessert
- Call setter before uncle limits baked item
- Topping menu with orgies, not so bad
Buddy explains!

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 MERINGUE mean?
MERINGUE noun- A mixture consisting of beaten egg whites and sugar which is added to the tops of pies then browned.
- A shell made of this mixture which serves as the receptacle for fruit, ice cream or sherbet.