Food causing upset to moderate Tories once (4)
I believe the answer is:
stew
'food' is the definition.
(I know that stew is a type of dish)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for stew that I've seen before include "hotpot" , "tart" , "Cook (in one's own juices?)" , "Cook slowly and for a long time in liquid" , "Slow cooked meat dish" .)