Fashion a limited amount of restraint (10)
I believe the answer is:
moderation
'restraint' is the definition.
(moderation is a kind of restraint)
'fashion a limited amount' is the wordplay.
'fashion' becomes 'mode' (synonyms).
'a limited amount' becomes 'ration' (I have seen 'adequate amount' mean 'ration' so perhaps 'amount' could also mean 'ration'. I am not sure about the 'limited' bit.).
'mode'+'ration'='MODERATION'
'of' is the link.
Can you help me to learn more?
(Other definitions for moderation that I've seen before include "Avoidance of excess" , "restraint" , "self-control" , "avoids extremes" , "Avoidance of extremes" .)