"Joy of Cooking" writer Rombauer (4)
I believe the answer is:
irma
'joy of cooking writer rombauer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for irma that I've seen before include "1963 film with Lemmon and Maclaine" , "Girl's name ("La Douce")" , "woman" , "- la Douce (1963 film)" , "- La Douce, nineteen sixty three Billy Wilder film" .)