Pick the centre out of a cold, brown sweet? (6)
I believe the answer is:
choice
'pick the centre' is the definition.
'choice' can be an answer for 'pick' (I've seen this in another clue). I'm not sure about the 'the centre' bit.
'a cold brown sweet?' is the wordplay.
'a cold brown' becomes 'cho' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sweet?' becomes 'ice' (ice is a kind of sweet).
'cho'+'ice'='CHOICE'
'out of' is the link.
Can you help me to learn more?
(Other definitions for choice that I've seen before include "Plum" , "Sophie's ---, William Styron novel" , "Pick" , "Volition" , "of superior quality" .)