This traditional Northern Mexican food is made of shredded pork meat cooked in fat with chile pasilla.
It normally comes in cans, and it is guaranteed to torpedo your diet. Why diet, when you could be eating Mexican food ? I mean, there is no comparison.
Anyway, chilorio goes from the can to a pan, where you fry it in its own fatty fat for some minutes. Drain the fat, serve hot with flour tortillas, eat in tacos. Accompanied, for the healthy touch, by refried beans.