Grave message close to charcuterie: 'Ready to eat' (4)
I believe the answer is:
ripe
'ready to eat' is the definition.
(I've seen this before)
'grave message close to charcuterie' is the wordplay.
'grave message' becomes 'rip' (rest in peace).
'close to' indicates one should take the final letters (the close/ending of).
The final letter of 'charcuterie' is 'e'.
'rip'+'e'='RIPE'
(Other definitions for ripe that I've seen before include "Fully grown, ready for eating" , "Ready for picking" , "Mature, ready to eat" , "Mature for eating like fruit" , "Ready to pick" .)