Soak the lentils for twelve hours. Rinse and put in a saucepan with extra virgin olive oil, celery, carrot and onion. Then add the bay leaf and cover with plenty of water and salt. Remove the intestine from the sausage and fry in a pan with hot oil. Add the lentils and let them cook. Cook the pasta and add it to the sausage and lentils. Cream with extra virgin olive oil.
Place the pasta with lentils and sausage and garnish with fresh rosemary.
Soak the lentils for twelve hours. The water should be three times the volume of lentils.