In the years that vegetarianism has become more mainstream, the meat-free diet itself has transformed. Gone are the years of the stereotypical “hippie” vegetarian who survives on dry oats, tofu blocks and raw vegetables (though there’s certainly nothing wrong with that). Now, in every grocery store one can find a section of “fake” or imitation foods, usually soy-based, created to substitute for real meat, providing a much smoother transition to…