"Cultured" dairy product (6)
I believe the answer is:
yogurt
'cultured dairy product' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for yogurt that I've seen before include "Dairy produce" , "Food made from fermented milk" , "Cultured fare" , "A food made from curdled milk" , "Semi-liquid dairy product" .)