Tart regularly scoffed by individual in pain — port required (8)

I believe the answer is:
montreal
'port required' is the definition.
I can't judge whether this defines the answer.
'tart regularly scoffed by individual in pain' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'scoffed by' means one lot of letters goes inside another (scoff can mean to eat or consume).
'individual' becomes 'one' (an individual is one person).
'in' means one lot of letters goes inside another.
'pain' becomes 'mal' (I've seen this in other clues).
The alternate letters of 'tart' are 'tr'.
'tr' inserted inside 'one' is 'ontre'.
'ontre' put into 'mal' is 'MONTREAL'.
Can you help me to learn more?
(Other definitions for montreal that I've seen before include "Neal and Mort are gone to Canada" , "Canadian hosts of the 1976 Olympics" , "French-Canadian city" , "Quebec's largest city" , "Let Norma go to Canada" .)
