Creamy dressing somewhere in Ireland (4)
I believe the answer is:
mayo
'creamy dressing' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for mayo that I've seen before include "Eg, Braeburn or Cox" , "Saucy thing" , "Irish county -- salad cream" , "radio presenter" , "Cold, creamy sauce (abbr)" .)