Club spread (4)
I believe the answer is:
mayo
'club spread' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mayo that I've seen before include "Thick creamy dressing" , "You'll find it in the Emerald Isle" , "Salad dressing (abbr)" , "Irish county -- salad cream" , "Saucy thing" .)