Following my recent column about vegetarianism, I received a wave of hate mail from meat eaters. This came as no surprise -- as food has finally become a political issue in America (as it should), some carnivores have become increasingly aggressive toward anyone or any fact that even vaguely prompts them to critically consider their culinary habit. Although the stereotype imagines vegetarians sententiously screaming at any meat eater they see at the lunch counter or dinner table, I've found quite the opposite to be true. In my personal life, I go out of my way to avoid talking about my vegetarianism while I'm eating with friends, family or work colleagues, but nonetheless regularly find myself being interrogated by carnivores when they happen to notice that I'm not wolfing down a plate of meat. Having been a vegetarian for more than a decade now, and having been raised in a family of proud meat eaters, I'm going to use this space to publish a brief primer for both ...