butter • shallots, minced (3/4 cup) • mixed mushrooms (cremini, shiitaki, oyster) finely chopped • minced rosemary • minced parsley • Maderia wine or sherry • white truffle oil, plus more for rubbing turkey • bone-in turkey breast, halved at breast bone • olive oil • winter greens (such as cale or Swiss chard) washed, steamed and chopped • garlic (4 tsp)