Saffron Sauce with Fresh Tomatoes

IF YOU LIKE the flavor of saffron, you will probably find this transformation of a classic sauce velouté to be one of your favorites to serve with poached fish or Basic Fish Mousseline. I use two large pinches of saffron for this sauce, but you may want to start with only one and see if you like the flavor. I have made this sauce a little thicker than a normal velouté, but it will thin to a perfect consistency, a little lighter than heavy cream