Grate the carrots and mushrooms, then finely chop the pepper, onion, and garlic.
Heat a little oil in a large saucepan over medium heat and add all the vegetables.
Cook for a few minutes until softened and fragrant.
Stir in the spice mix, chopped tomatoes, harissa, and balsamic vinegar, then mix well.
Add the lentils and water, and let the chilli simmer gently until it thickens and all the flavours come together.
Serve with a sprinkle of fresh coriander and your favourite bread.