Dried Porcini Mushrooms are a favorite among the gourmet mushrooms! The flavor of the porcini, also called the boletus, deepens and concentrates through drying. And the liquid that brings them back to fullness will steal from them a rich essence of their woodsy, dark flavor, to add a succulent dimension to soup, broth or sauce. Sumptuous in a beef stroganoff, in a creamy risotto or cozied up to caramelized onions.