Adjust salt and pepper to taste. Just before serving sprinkle greated cheese on sauce. Serve on side of dish with dried grasshoppers. Gusanos de Maguey are especially good to eat and highly prized. In Real Player Ingredients for Mexican cuisine are now widely available throughout the United States and Canada.
Many supermarkets now carry sauces and even chiles used in many dishes.
Dried pasilla and ancho chiles might be available in packages. Asian markets also carry ingredients used in Mexican cookery, such as cilantro and some chiles. If you are lucky enough to live in an area where people of Mexican extraction live, then such exotic items such as gusanos de maguey or chapulines might be available. If you cannot find any of these ingredients, then a trip to Mexico is in order. Insects were a major part of the Pre-Columbian diet.