People have several reasons to consume mushrooms, but the common purpose is to get a pleasant feeling.
First, if there was any chance I could get an identification wrong and poison myself, I would leave the mushroom alone.
While the indigo milk-cap is typically not cooked by itself, you could dip it in egg and batter it in flour, then fry them in oil for crispy, peppery mushrooms.
Two species, Russula aeruginea and Russula virescens, have a green cap, but are eminently edible, as is Lactarius volemus, according to United States Department of Agriculture.
They prefer mossy areas around oaks and conifers.
For multiple weeks, the ground was covered with huge, thick, brown mushrooms.