Thats the recipe I also use Barbara. Unfortunately, did not have a great raspberry season this yr.
I use a food mill; (I purchased it at William Sonoma... I can't recall the brand). I have had great success in making the jam from the frozen puree; as there were years I seriously could not keep up w/ the jam making and resorted to freezing some of the puree.
Have fun! And happy Jammin' Cyn!