Stop idea about matter in question being fat (7,6)

I believe the answer is:

adipose tissue

I'm a little stuck... Click here to teach me more about this clue!

'being fat' is the definition.
(I've seen this before)

'stop idea about matter' is the wordplay.
'about' indicates an anagram.
'matter' becomes 'issue' (synonyms).
'stop'+'idea'='stopidea'
'stopidea' is an anagram of 'adiposet'.
'adiposet'+'issue'='ADIPOSE TISSUE'

'in question' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Another definition for adipose tissue that I've seen is " Cells that store fat".)

I've seen this clue in The Daily Express.

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