Rinse lenses cold. Boil up with a good 1 1/2 l water. Simmer covered for 20-30 minutes
Clean, wash and slice the celery. Carve tomatoes crosswise, blanch, quench. Skin tomatoes, dice. Peel and chop garlic. Crumble pepperoni
Drain the lentils, collect the cooking water. Fry celery, garlic and pepperoni in 2 tablespoons of hot oil. Add tomatoes, simmer open for about 10 minutes. Add lentils, 300 ml cooking water and stock. Bring to the boil, cover and simmer for about 10 minutes. Season lentils with vinegar and salt
Fry sausages in 2 tablespoons of hot oil for 6-8 minutes. Serve with lentils