I'm thinking about reverting your edit, but I'm going to wait until tonight (PST) so I can watch one of my recorded episodes first.  The reason is that I don't think the Japanese version calls it a secret ingredient, but rather a theme ingredient.  I think your edit would be more appropriate on the Iron Chef America page.  If they do refer to it as a secret ingredient, then your addition should of course remain.  ♬ 17:45, 29 Mar 2005 (UTC)