I would think that they are reffering to a Dried Ancho Chile. It is about 3 to 4 inches long and can usually be found in any Mexican store in bulk or packages. Arbol chiles would be used to adjust the heat. The deep red color is associated with Dried Ancho Chiles…Russ
ALSO IF ANYONE KNOWS A SUPPLIER OF DRIED ANCHO CHILES AT A GOOD PRICE FOR 50 LBS OR MORE I WOULD BE INTERRESTED. THANKS …Russ