Cook taking sort of utensil for warming marshmallows? (8,4)
I believe the answer is:
toasting fork
'utensil for warming marshmallows?' is the definition.
'cook taking sort of' is the wordplay.
'cook' indicates anagramming the letters.
'taking'+'sort'+'of'='takingsortof'
'takingsortof' is an anagram of 'TOASTING-FORK'.
(Other definitions for toasting fork that I've seen before include "for getting brown" , "Which holds bread close to a fire" , "Device used for cooking over an open fire" , "Cooking utensil" , "which could result in hot bread" .)