Candied root eaten by beery NGOs (6)

I believe the answer is:

eryngo

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

'candied root' is the definition.
The definition and answer can be both plants as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'eaten by beery ngos' is the wordplay.
'eaten by' says the answer is hidden in the clue.
'ERYNGO' can be found hidden inside 'beery ngos'.

Can you help me to learn more?

(Another definition for eryngo that I've seen is " Sea holly".)

I've seen this clue in The Independent.

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