A Gugelhupf, Guglhupf or Gugelhopf is a southern German, Austrian, Swiss and Alsatian marble cake or Bundt cake. Gugel- is supposedly a variation of the Middle High German gugel ('hood'), while -hupf is a variation of Hefe ('yeast'). Popular etymology says that the -hupf part comes from the German word hüpfen (to jump), as the yeast dough literally "jumps out of" the cake pan.