The most common and most likely answer to this crossword clue is the 10 letter word MASCARPONE
I've seen this crossword clue in The Daily Telegraph
M
A
S
C
A
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More clues leading to the result MASCARPONE
- Roman with space for manufacturing cream cheese
- Seeing that fish filling most of bread? Or cheese?
- Mother’s fish served with a single cheese
- Miffed at first, when one, after fish, offers cream cheese
- Cheese before pa’s haddock two?
- Parmesan company briefly manufactured Italian cream cheese
- Mums complain about European cheese
- Mum’s only eating fish and cheese
- Strange sap on cream cheese
- Member of secret society eating fish, ending with the cheese
Buddy explains!

The straight part
We know that "cheese" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cheese = mascarpone.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 MASCARPONE mean?
MASCARPONE noun- A soft, creamy Italian cheese that is not pressed or aged; often used in desserts.