Add one packet chicken-tomato bouillon to two cups water; bring to boil. Toast dried chilies in a pan but do not burn. Remove stems and seeds from chilies and add to boiling stock. Add onion, garlic, ancho powder. Boil five minutes, let cool. Add crushed tomato, juice of lime and oregano. Puree in food processor. Refrigerate overnight.
Source: http://metrotimes.com/food/punk-chef-1.1258988?pgno=1
Video of taco making and shopping: http://vimeo.com/35204236