Not all red beans, say, are revolting (7)
I believe the answer is:
repulse
'are revolting' is the definition.
I can't judge whether this definition defines the answer.
'not all red beans' is the wordplay.
'not all' means to remove the last letter (not quite all of it).
'beans' becomes 'pulse' (edible seeds).
'red' with its last letter removed is 're'.
're'+'pulse'='REPULSE'
'say' is the link.
Can you help me to learn more?
(Other definitions for repulse that I've seen before include "Rebuff, drive back" , "Send back" , "Fend off" , "Beat back" , "Drive back by force" .)