Peel and chop the onion. Slice chillies lengthwise, remove seeds and cut into fine rings. Heat the fat in a large pot and fry the onion in it until transparent. Add dish lentils, broth and chilli, bring to the boil, cover and cook over medium heat for 15-20 minutes. In the meantime, clean and wash the potatoes, carrots and leek. Slice carrots and leek, dice potatoes.
Add potatoes, vegetables and apple juice to the dish lentils and cook for another 15 minutes. Wash and quarter the apple and cut out the core. Cut the apple into thin slices and put them together with the red lentils into the stew. Simmer again for another 10 minutes. Wash the chives, dab dry and cut into fine rolls. Season the finished stew with salt, arrange in a tureen and serve sprinkled with chives