Wash and quarter the quinces and cut out the core. Peel the quinces and cut the flesh into thin slices. Heat 2 tbsp. oil and 100 ml water in a saucepan. Cover the quince slices and steam for 7-8 minutes, turning occasionally.
Peel onions and garlic, dice finely and add to the quinces. Continue steaming for about 1 minute, add tomatoes, coconut milk and vegetable stock. Add lentils, bring to the boil and simmer for about 20 minutes.
Clean, wash and cut the chillies into rings, removing the seeds. Add the chillies to the lentils and cook with them. Heat 1 tablespoon of oil in a frying pan. Fry the sausages for 4-5 minutes. Wash parsley, dab dry, pluck leaves from the stalks.
Chop the leaves, except for a few for garnishing. Cut the sausages into pieces. Add the sausages and chopped parsley to the lentils about 5 minutes before the end of the cooking time. Season stew with cumin and cinnamon and season with salt and pepper.
Arrange and garnish with remaining parsley.