"Dudley didn't even protest at the food (cottage cheese and grated celery)"
(Goblet of Fire 40).
Personally, I find cottage cheese to be absolutely disgusting. However, I do understand that lots of people think it's just fabulous when added to salad or fruit. Apparently Aunt Petunia relishes the idea of serving it with grated celery in her attempts to shrink her Diddykins' waistline.
If you care to try it, go right ahead and grate some celery over a bowl of your favorite brand of cottage cheese. And don't worry, it's all yours. I don't want to share it with you!