This dip is one of my US discoveries, along with celery stalks which I never tried before I came here.
These two I can eat together endlessly, as an appetizer, a side or just a snack. It just made a lot of sense to learn to mix the dip from scratch myself.
Blue cheese dip goes great with fresh vegetables (e.g. celery, carrots, broccoli, cauliflower), spicy chicken wings or as a fresh salad dressing (I would suggest to put a bit more kefir to the mix in this case).