Cold, in a Gallic sort of way (7)

I believe the answer is:

glacial

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'cold' is the definition.
(similar in meaning)

'in a gallic sort of way' is the wordplay.
'in' is an insertion indicator.
'sort' indicates an anagram.
'of way' becomes 'a' (I can't justify this - if you can you should give a lot more credence to this answer).
'gallic' is an anagram of 'glcial'.
'glcial' placed around 'a' is 'GLACIAL'.

Can you help me to learn more?

(Other definitions for glacial that I've seen before include "Ice cold" , "Cold and icy" , "Frigid" , "Freezing - unfriendly" , "Of slow moving ice masses" .)

I've seen this clue in the Evening Standard.

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