Slice the onion, tomato, carrot, and potato.

In a pressure cooker, sauté the onion in oil until it softens slightly, then add the potato, carrot, and garlic and cook for a few minutes.

Add the lentils, tomato paste, tomato, salt, spices, and hot pepper. Stir and cook until the mixture thickens slightly.

Pour in the hot water, cover the cooker, and simmer on low heat until everything is cooked through.

Pour the lentil soup into a bowl and serve hot.