Sticky stuff: not-too-spicy piece of pork picked up before end of course (8)
I believe the answer is:
birdlime
'sticky stuff' is the definition.
'not-too-spicy piece of pork picked up before end of course' is the subsidiary indication.
'not-too-spicy' becomes 'mild'.
'piece of pork' becomes 'rib'.
'picked up' says the letters should be written backwards.
'before' says to put letters next to each other.
'end of' says to take the final letters.
The last letter of 'course' is 'e'.
'mild'+'rib'='mildrib'
'mildrib' written backwards gives 'birdlim'.
'birdlim'+'e'='birdlime'
(Another definition for birdlime that I've seen is " Sticky substance set to trap birds".)