Very similar to my grandmother's recipe, also called Yum Yum cake - I think it's from the civil war. Our mother made it for all our birthdays growing up (10 children). Except our recipe uses more shortening, and also has cocoa in it. Still our favorite cake to this day! Also, has to have pink frosting to be real yum yum cake - what a nice surprise to find the same (almost) cake here!