Bay Boletus Mushrooms are from the same family as porcini mushrooms. The mushrooms have a glossy brown cap, with yellowish pores underneath the cap instead of gills.
When bruised, the bruised spots quickly turn a greenish-purple.
The mushrooms have a meaty taste.
Before cooking discard the stem, and scrape off the pores underneath because they become slimy and unpleasant when cooked.