Clear problem around current cake (6)
I believe the answer is:
eclair
'cake' is the definition.
(eclair is a type of cake)
'clear problem around current' is the wordplay.
'problem' is an anagram indicator.
'around' is an insertion indicator.
'current' becomes 'I' (symbol for electric current).
'clear' with letters rearranged gives 'eclar'.
'eclar' placed around 'i' is 'ECLAIR'.
(Other definitions for eclair that I've seen before include "Finger-shaped, chocolate-iced, cream-filled cake" , "A long choux cake" , "Finger-shaped cream-filled cake of choux pastry" , "Long thin cake with chocolate and cream" , "comedian Jenny?" .)