I believe true carnitas are made with very, very slow-cooked pork that is pulled into small pieces that are then broiled to carmelize them.  They are seasoned during the initial cooking with orange juice and orange peel, cumin, garlic and chili spices.  Any carnitas I have had in Mexican restaurants have had cilantro on top, and lime to squeeze over, and flour tortillas.

They are my favorite Mexican food. I like them much better than fajitas.

There is a little taco house on Ogden Avenue somewhere around Westmont/Downers Grove, Illinois that has the best carnitas I have ever eaten.  Buenas!