Much red meat to show (6)
I believe the answer is:
reveal
'to show' is the definition.
(revealing is a kind of showing)
'much red meat' is the wordplay.
'much' means to remove the last letter (much but not all of the word).
'meat' becomes 'veal' (veal is a kind of meat).
'red' with its last letter taken off is 're'.
're'+'veal'='REVEAL'
(Other definitions for reveal that I've seen before include "Expose or disclose" , "Show, uncover" , "Make known, uncover and allow to be seen" , "Make known, expose" , "Final disclosure" .)