Ingredient of Christmas pudding being blamed for poisoning (3)

I believe the answer is:

asp

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'ingredient of christmas pudding being blamed for poisoning' is the definition.
I can't tell whether this defines the answer.

'ingredient of christmas pudding being' is the wordplay.
'ingredient of' indicates a hidden word.
'ASP' is hidden within 'christmas pudding being'.

Can you help me to learn more?

(Other definitions for asp that I've seen before include "Small poisonous snake" , "This Egyptian killer" , "Reptile" , "Cleopatra-killing snake" , "Poisonous type" .)

I've seen this clue in The Times.

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