food snob
a lot of times they are a person who cooks in a restaurant, and doesnt make that much money, but turns their nose up at any convenience foods...likes to make up some fancy sauce to serve over ahi, and likes to name drop famous chefs' names, critical of other people's food choices, thinks he can deem your social class by the temperature of your steak
there's nothing wrong with a microwave meal....i dont know how that guy is such a food snob about it, it's not like he can afford to dine on steak everynight