In defense of heathfield's suggestion, I find that many imported containers of saffron already contain tumeric as a filler to extend thereally expensive saffron. Tumeric can be used in inexpensive dishes not being prepared for the Queen or our President here in the U.S. While it does add the golden color desired, it has a more pronounced taste, sometimes described as being nearer that of ginger. So, considering the cost, I'd have no problem in substituting tumeric, especially considering most people have never tasted saffron anyway. I'd probably own up to it and hope to have a small supply of saffron in the future, though...