Children allegedly taste of kidneys (5)

I believe the answer is:

renal

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

'of kidneys' is the definition.
(I've seen this before)

'children allegedly taste' is the wordplay.
'RENAL' is hidden within the letters.
But, I'm uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for renal that I've seen before include "like kidneys" , "connected with organ" , "around the kidney" , "Referring to organ" , "Vital organ's" .)

I've seen this clue in the Sydney Morning Herald.

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