Build & simmer the mushroom ragu: Add the porcini-infused inventory from Step 3 to the pot, along with the grated parmesan. Ingredient Notes: Best mushrooms for mushroom ragu: I like to make wild mushroom ragu using 2 sorts of fresh mushrooms - I like to splurge for really lovely wild mushrooms - maitake (pictured), oyster, chanterelle, & shiitake ar...