Cooked on low or high (6)
I believe the answer is:
stewed
This clue might be a double definition.
'cooked on low' is the first definition.
'stewed' can be an answer for 'cooked' (stewing is a kind of cooking). I am unsure of the 'on low' bit.
'high' is the second definition.
(thesaurus)
'or' is the link.
Can you help me to learn more?
(Other definitions for stewed that I've seen before include "Slowly boiled" , "mortal" , "felt uneasy" , "was in agitated state" , "casseroled!" .)