Start by making the enchilada sauce. Put the onion into a medium saucepan with the olive oil and cook over a low-medium heat for 7–8 minutes, or until soft and just starting to brown at the edges.
Best Enchiladas: Polanquito Enfrijoladas Our top enchilada comes from the quaint, authentic Mexican café ... rather than the standard enchilada sauce. The bean sauce is the star of the plate ...