You shouldn't judge a book by it's cover, but these folks have some surefire ways to tell if a restaurant is quality or not. I actually have a true story about this that you can totally judge me for. One time, I was in Harlem, volunteering to paint homes in an area I had never been before. I had to get lunch somewhere, so I stopped in a corner store and bought a BLT. I hung out in the store, and as the person behind the counter handed me the sandwich, I saw a cockroach crawling inside the glass…