Remnants of neckwear and mugs (9)

I believe the answer is:

boatraces

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'remnants' is the definition.
I know nothing about this answer so I can't judge whether this works.

'neckwear and mugs' is the wordplay.
'neckwear' becomes 'boa' (boa can mean a scarf).
'and' means one lot of letters go next to another.
'mugs' becomes 'traces' (I am not sure about this - if you are sure you should believe this answer much more).
'boa'+'traces'='BOATRACES'

'of' acts as a link.

Can you help me to learn more?

I've seen this clue in The Daily Express.

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