In a small saucepan, bring the stock to a simmer, add the dried porcini mushrooms, turn off the heat and leave them to soak and swell up until they’re needed later in this step. Heat the tbsp of olive oil over a medium heat in a casserole and cook the pheasant until it is browned all over (approx. 8 minutes), then set aside on a plate. Add the pancetta to the casserole and brown (approx. 2 minutes), stirring all the time. Add the shallots, garlic and shiitake mushrooms (if using) and stir for 1 minute, then add the bay leaf. Pour in the white wine, deglaze the pan and bubble for 1 minute. Add the stock, porcini mushrooms and the browned pheasant, season well, and bring to a simmer. Put the lid on the pan, making sure it fits tightly, and cook gently for 1 hour until the meat starts to fall off the bones.
Lift the pheasant out (and remove the bay leaf), leave to cool a little on a plate and then strip the meat off the bones and tear it into pieces. Simmer the stock until it thickens a little (approx. 5 minutes) and then add back the pheasant, parsley and a squeeze of lemon juice.
Serve either with tagliatelle and grated parmesan, to garnish or polenta – see step 4.
If you decide to have polenta, heat a medium saucepan over a medium heat and add the boiling water, milk, chopped garlic and salt. Bring to a simmer and then sprinkle in the polenta gradually, whisking continuously until it’s all in the pan. Cook for 10 minutes, stirring frequently. Finally, add the grated parmesan and diced butter – stir until all of the butter has melted. Add more water if required to get desired consistency. If you’re having some vegetables on the side, cook these while the polenta is cooking.