Vaguely reminiscent of the mushroom pâtés served in the hippie era, this flavorful spread tastes much more sophisticated thanks to a mix of mushrooms (shiitake and portobello), fresh herbs, and a whiff of truffle oil. Be sure to scrape the black gills on the underside of the portobello mushrooms and discard them; the gills will turn the entire pâté an unattractive black color. For the best flavor, make this pâté a few hours in advance and serve it at room temperature or warm with