The haredi world is full of food related establishments without Rabbanut certificates who advertise themselves as Kosher. Once again the haredi take over of the state religious institutions is protecting its income source from the general public by harassing small businesses.. So long as the business does not hang a Kashrut Certificate and they make clear they are not "under the rabbanut supervision" their freedom of speech and religion and their customers freedom of choice should be fully protected.
U.S.-led coalition conduct 23 air strikes against ISIS in Iraq and Syria (Reuters)
from the article: Israel's Chief Rabbinate declares war on Jerusalem restaurants