You'll get a rise out of it (5)
I believe the answer is:
yeast
'you'll get a rise out of it' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yeast that I've seen before include "It makes dough rise" , "As yet (anag)" , "Fermenting agent" , "that baker needs" , "It's put in to raise" .)