Panettone and butterscotch served at Christmas, for example (5,5)

I believe the answer is:

bread sauce

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'example' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for bread sauce that I've seen before include "chicken might come with it" , "Accompaniment for turkey?" , "something creamy and white?" , "Food dressing" , "[TRIMMING] ? - with 10a" .)

I've seen this clue in The Irish Times.

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