This may be old news so forgive this newbie if it is, but I just came across a yellow gravy recipe from vahrehvah that looks interesting. I haven't had a chance to make it but perhaps others have seen it or tried it?
http://www.vahrehvah.com/indian-yellow-gravy-restaurant-style-korma-curry-mother-sauce#.VBnvcRa9Kc0
http://www.vahrehvah.com/indian-yellow-gravy-restaurant-style-korma-curry-mother-sauce#.VBnvcRa9Kc0
