One gets cooked — terrible loss perturbs us (8,6)

I believe the answer is:

brussels sprout

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

'one gets cooked' is the definition.
I can't tell whether this defines the answer.

'terrible loss perturbs us' is the wordplay.
'terrible' indicates an anagram.
'loss'+'perturbs'+'us'='lossperturbsus'
'lossperturbsus' anagrammed gives 'BRUSSELS SPROUT'.

Can you help me to learn more?

(Another definition for brussels sprout that I've seen is " Small cabbage-like vegetable".)

I've seen this clue in The Hindu.

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