dry mushrooms (Porcini, Morels or Shitakes) • olive oil • spring of rosemary • spring of sage • large yellow onion, peeled and thinly sliced • garlic, peeled and thinly sliced • salt • white pepper • white botton mushroom, clean and thinly sliced • shitake mushroom, cleaned, steamed and thinly sliced • chicken stock • heavy cream •