Veggie Burgers Swerve into the Mainstream

They began life as a Left Coast creation—an eccentric, heath food knock-off of an American classic. For years they were maligned as earthy, cheap imitations of the real thing. Yet they’ve survived the road less traveled, and now it appears veggie burgers are about to hit the on-ramp to mainstream popularity.

The fast lanes of the interstate highway of food distribution consist of the major fast-food chains. But request a vegetarian sandwich at one, which I recently tried as an experiment, and you…