What do anorexics eat?
They don't eat ... They're anorexic.
People with anorexia do eat. They tend to just eat extremely limited quantities and often have a limited list of "approved" foods that they feel comfortable eating. When people with anorexia are in situations that require them to eat (family functions, holidays with family / friends, etc) they might participate in eating the food but may not finish it all or simply push the food around their plate, hide it in napkins, etc. When a person with anorexia cannot get away with these behaviors (hiding food or pushing it around) it is common for them to eat, while planning how they are going to compensate for that behavior (such as restricting even more the next day, purging, etc).