Port originally consumed by a storyteller in private? (8)

'port' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's an association between them I don't understand?

'originally consumed by a storyteller in private?' is the wordplay.
'originally' indicates taking the first letters.
'by' means one lot of letters go next to another.
'storyteller' becomes 'liar' (someone telling lies).
'in' is an insertion indicator.
'private?' becomes 'GI' (GI can informally mean a US soldier).
The initial letter of 'consumed' is 'c'.
'liar' going inside 'gi' is 'gliari'.
'c'+'a'+'gliari'='CAGLIARI'

Can you help me to learn more?