Attendant to cook sardines (not in pan) (10)
I believe the answer is:
stewardess
'attendant' is the definition.
(I know that stewardess is a type of flight attendant)
'cook sardines not in pan' is the wordplay.
'cook' becomes 'stew' (stewing is a kind of cooking).
'not' suggests deleting specific letters.
'pan' indicates anagramming the letters (letters must be panned or attacked).
'sardines' with 'in' taken away is 'sardes'.
'sardes' with letters rearranged gives 'ardess'.
'stew'+'ardess'='STEWARDESS'
'to' acts as a link.
(Other definitions for stewardess that I've seen before include "working woman" , "Female flight attendant" , "Aircraft attendant" .)