Fellow phoned Scotsman about penny sweet's centre being cream (10)

'cream' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'fellow phoned scotsman about penny sweet's centre' is the wordplay.
I cannot really see how this works, but
'fellow' could be 'f' (abbreviation - of a society etc.) and 'f' is present in the answer.
'phoned' could be 'rang' ('ring' can be a synonym of 'phone') and 'rang' is present in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found in the answer.
'penny' could be 'p' (short for pence) and 'p' is found within the answer.
The remaining letters 'ine' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'being' is the link.

Can you help me to learn more?