Place lentils, water, salt, pepper, and cumin in a pot and bring to boil. Cover and cook over medium heat for 25 minutes. In the meantime, heat oil in frying pan; then saut, onions, garlic, and hot pepper over medium heat for about 10 minutes. Add coriander and stir-fry for 3 more minutes. Add frying pan contents and vermicelli to lentils and bring to a boil. Cover and simmer over low heat for about 30 minutes or until vermicelli and lentils are well-cooked.
