I was intrigued by a recipe that called for 'porcini' powder and looked, unsuccessfully, for a jar of it on several diffent spice racks. Then I realized I could make the powder by grinding dried porcinis. It was simple...and added a nice, earthy flavor to a dry rubbed chicken.
Minced shallots, porcini powder, sea salt, ground pink pepper. Rub the mixture on the meat at least 10 minutes before grilling.