3 tablespoons extra-virgin olive oil
1 carrot, finely diced
1 onion, finely diced
1 celery rib, finely diced
1 1/2 pounds ground lamb
2 teaspoons ground coriander
1 teaspoon ground fennel seeds
1/2 teaspoon ground cumin
1 teaspoon chopped rosemary
1 teaspoon chopped thyme
Salt and freshly ground pepper
1 tablespoon tomato paste
1/2 cup dry red wine
One 28-ounce can diced tomatoes
1 1/4 cups chicken stock or low-sodium broth
3/4 pound pappardelle
1 tablespoon unsalted butter
3/4 cup fresh ricotta cheese
2 tablespoons chopped mint