- Spritz a pan with a little low calorie cooking spray.  
- Add the onion and celery, and sauté for about 5 minutes until softened. Add a splash of water if it starts to stick. 
- Add the grated carrots and garlic, and cook for another 2-3 minutes. Again adding a splash of water if needed. 
- Increase the heat to medium-high. Add the pork mince to the pan, breaking it up with a spoon. Cook until the pork is browned and cooked through, about 5-7 minutes. 
- Add the chopped tomatoes, tomato puree, chicken stock, oregano, basil, bay leaf, and a good pinch of salt and pepper. Mix everything together until well combined. 
- Reduce the heat to low, cover the pan with a lid, and let the ragu simmer gently for at least 25/30 minutes, stirring occasionally. 
- While the ragu is simmering, cook the pasta according to the package instructions. Drain the pasta and set aside. 
- Remove the bay leaf from the ragu. 
- Drain the pasta and add to the ragu. Add the pasta to the ragu and mix together making sure all of the pasta is covered and serve.