White Bolognese 1/4 cup finely chopped onion 1/8 cup finely chopped carrot 1 stalk celery, finely chopped olive oil salt 1 pound Italian pork sausage, removed from its casings, or ground pork plus 1 teaspoon chile flakes and 3 leaves fresh sage, finely sliced 1 pound ground beef 11/2 cups white wine 2 cups beef or chicken stock 11/2 ounces dried porcini mushrooms rehydrated in 3 cups warm water 1/3 cup heavy cream 1 pound rigatoni or another short noodle or 1 cup polenta 3/4 cup freshly grated Parmesan cheese Cook the onion, carrot, and celery in olive oil until tender, salting them as soon as
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