Heat 1 or 2 tablespoons of olive oil in a casserole and brown the spare ribs or pork belly and sausages all over. Remove them to a dish and soften the onion and carrots in the same oil for 10 minutes. Add the garlic, leek and herbs and cook gently for a further 5 minutes.
Dissolve the tomato purée in the stock.
Stir the lentils into the meat pan and when they are well coated wit