Curdled milk product (7)
(Other definitions for yoghurt that I've seen before include "Cultured food" , "Dairy produce" , "Bacteria-treated milk product" , "Tory? Ugh! (anag)" , "Healthy food" .)
(Other definitions for cottage cheese that I've seen before include "Simple food" , "Light food" , "dairy produce" , "Dairy product" , "Skimmed-milk product" .)