Fiesta Grill in Bel Air, MD
This restaurant is in a tiny strip center, and it is super small inside, but their food is out of this world. All of their food is homemade. Having lived in Mexico, I am super snobby about the quality and authenticity of Mexican food. Fiesta Grill never disappoints. It is the closest place that I've found to authentic Mexican cuisine. It is located in Bel Air, MD, just off of Tollgate Road.