Make a meal of mockery (5)
I believe the answer is:
scoff
This clue is a double definition.
'make a meal of' is the first definition.
(to scoff something is to eat it)
'mockery' is the second definition.
(I know that mockery can be written as scoff)
(Other definitions for scoff that I've seen before include "Speak contemptuously or drink informally" , "Jeer; eat greedily" , "Greedily consume" , "Mock" , "Deride - guzzle" .)