Agaricus Salad with Blood Oranges and Fennel

Shaved fennel is a refreshing addition to practicallyany type of mixed salad; it’s my go-to when something fancy is called for. Ditto with the blood oranges. The mushrooms make a mellow foundation for the big flavors of the other ingredients. There are three types of mushrooms you can use in this dish, and all must be young and very fresh. They are Agaricus bisporus, Amanita caesarea, and, of the porcini group, Boletus rubriceps, B. aureus, and B. aestivalis.