Sent round a pack that’s consisting of bread and wine (9)

I believe the answer is:

sacrament

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'consisting of bread and wine' is the definition.
I can't judge whether this definition defines the answer.

'sent round a pack' is the wordplay.
'round' indicates putting letters inside.
'pack' becomes 'cram' (synonyms).
'a'+'cram'='acram'
'sent' placed around 'acram' is 'SACRAMENT'.

'that's' acts as a link.

Can you help me to learn more?

(Other definitions for sacrament that I've seen before include "Eucharist, for example" , "Orders" , "Sign of grace" , "Ceremony such as Christian baptism" , "Religious ceremony" .)

I've seen this clue in The Times.

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