This hearty soup is made with dried borowik mushrooms -- a pungent variety from Poland -- dried shiitakes, and fresh button mushrooms. Since borowik mushrooms can sometimes be difficult to find, you may substitute dried cepes, also known as porcini mushrooms. Always store dried mushrooms in an airtight container to preserve their flavor.
These crisp, sugar-dusted Polish cookies made with twists of dough quickly fried in hot oil are also known as angels' wings or bow ties. in the United States, they are served at holidays, Polish-American weddings and other festivities. Martha likes to stack a tower of chrusciki on a pressed-glass cake stand, largest chrusciki first, to make a Christmas-tree formation.