Stuffed pizzas are a Chicagoan delicacy consisting of layers of cheese and fillings above-- and below-- a thin pizza crust. One of the best ways to bake them is in a springform pan, so that the sides come out in perfect cylinders and come out easily. Take
K. Möller, T. Heath, S. Handschuh, and J. Domingue. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 795--808. Berlin, Heidelberg, Springer Verlag, (November 2007)