America has undergone a kosher revolution. It wasn’t all that long ago that demand for kosher food was restricted to a tiny niche of the public — Jews amount to less than 2 percent of the US population, and only a minority of Jews keep kosher.
Some foods, of course, can never be kosher. McDonald’s double cheeseburgers and New England clam chowder will never be brought under the tent. But kosher has undeniably gone mainstream.