Cook using ceramic hob, eschewing fire at first (4)
I believe the answer is:
chef
'cook' is the definition.
(chef is a kind of cook)
'ceramic hob eschewing fire at first' is the wordplay.
'at first' suggests taking the first letters.
The first letters of 'ceramic hob eschewing fire' is 'CHEF'.
'using' acts as a link.
(Other definitions for chef that I've seen before include "Professional cook" , "Cooker?" , "Originator of courses" , "Head cook in a restaurant" , "Kitchen head" .)