Service for example including meat, not the heart (8)
I believe the answer is:
evensong
'service' is the definition.
(I've seen this before)
'example including meat not the heart' is the wordplay.
I cannot quite see how this works, but
'including' could be 'even' ('even' can mean 'including' when reciting a list) and 'even' is present in the answer.
'not' could be 'o' (I've seen this in other clues) and 'o' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'for' acts as a link.
Can you help me to learn more?
(Other definitions for evensong that I've seen before include "Vespers" , "Late afternoon church service" , "6 [SERVICE] ?" , "Church service late in the day" , "Religious service" .)