Travelling off, I repeatedly wintered in port? (9,4)

I believe the answer is:

fortified wine

'port?' is the definition.
(port is a kind of fortified wine)

'travelling off i repeatedly wintered' is the wordplay.
'i repeatedly' means two replacements for 'i'.
'travelling' is an anagram indicator.
'off'+'i'+'i'+'wintered'='offiiwintered'
'offiiwintered' is an anagram of 'FORTIFIED WINE'.

'in' is the link.

(Another definition for fortified wine that I've seen is " Such as sherry".)

I've seen this clue in The Times.

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