Authentic enchilada recipe from San Antonio. The Enchilada Gravy recipe will make 3 quarts so use as much as you like then refrigerate or freeze the rest. Cook time includes time to make Enchilada Gravy and Chili con Carne. Prep time is the time to make the Enchiladas. Enchiladas can be frozen fully assembled then thawed and heated in the oven. This recipe looks complicated but it is so easy, just throw everything into two pots and simmer while rolling up the tortillas! Substitute store-bought enchilada sauce for the Tex-Mex lovers, the enchilada gravy is some heavy stuff!