Two servings of cooked meat, one from the same side (8)

I believe the answer is:

teammate

'one from the same side' is the definition.
(someone on the same team or side as you)

'two servings of cooked meat' is the wordplay.
'two servings of' becomes 'team' (I can't justify this - if you can you should give a lot more credence to this answer).
'cooked' indicates an anagram (letters cooked into a new form).
'meat' with letters rearranged gives 'mate'.
'team'+'mate'='TEAMMATE'

(Another definition for teammate that I've seen is " fellow player".)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.