Processed meat and BSE? I have no idea what the answer is (5,2)

I believe the answer is:

beats me

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'i have no idea what the answer is' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'processed meat and bse?' is the wordplay.
'processed' indicates anagramming the letters.
'and' says to put letters next to each other (I've seen this in other clues).
'meat' put after 'bse' is 'bsemeat'.
'bsemeat' is an anagram of 'BEATS ME'.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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