4 slices bacon
1 c. onion, chopped
1 c. carrot, chopped
1 c. celery, chopped
1 lb. lentil
3 qts. water
2 beef bouillon cubes
2 tbsp. vinegar
2 tsp. dry mustard
1 lb. sliced franks
1/4 c. ketchup
Salt and pepper

Partially cook bacon and add onion, carrots, and celery and saute for 15 minutes. Add lentils, water, bouillon cubes, vinegar, and mustard. Bring to a boil and cook for 1 hour. Add sliced franks, ketchup, salt, and pepper. Simmer for 15 minutes.