Cask Edward put into good order (5)
I believe the answer is:
tuned
'into good order' is the definition.
I can't tell whether this defines the answer.
'cask edward' is the wordplay.
'cask' becomes 'tun' (tun is a kind of cask).
'edward' becomes 'Ed' (short for Edward).
'tun'+'ed'='TUNED'
'put' is the link.
Can you help me to learn more?
(Other definitions for tuned that I've seen before include "Got engine right" , "Adjusted (musical) pitch" , "(Of radio) set to a frequency" , "on song" , "Adjusted (eg, a piano)" .)