Teach unit version of reliable truth (9)

I believe the answer is:

authentic

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'teach unit version of reliable truth' is the definition.
I can't tell whether this defines the answer.

'teach unit version of' is the wordplay.
'version of' indicates anagramming the letters.
'teach'+'unit'='teachunit'
'teachunit' anagrammed gives 'AUTHENTIC'.

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(Other definitions for authentic that I've seen before include "reliable" , "Real, genuine" , "Genuine, not a copy" , "24 [LEGIT]" , "Ian, the cut is genuine" .)

I've seen this clue in The Irish Independent.

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