In secret corners of Los Angeles, there are places that just scream, “Old Hollywood.” You know, the Hollywood before organic Whole Foods soy milk took over, when hot dogs were chock-full of nitrates and the only conceivable burger was of the “ham” variety. Vestiges of this near-forgotten time still exist, as proven by Irv’s Burgers, which I visited a few months ago. But Irv’s is not alone, as I recently discovered a similarly classic-looking place called Papoo’s Hot Dog Show in Toluca Lake.