Knockwurst with German Potato Salad (Kartoffeln Salat)

4 Potatoes
1 onion sliced
2 tsp salt
4 slices bacon, diced
2 tbs flour
2 tbs sugar
1 tsp dry mustard
1/4 tsp pepper
1/3 cup vinegar
2/3 cup water
1/2 tsp celery seed
4 knockwurst
1 tsp finely chopped parsley

Peel and slice potatoes.  Combine with onions in a slow pot.  Sprinkle 1 tsp salt.  Cover with water and cook for 5 to 6 hours on low.  Drain.  Cook bacon - stir in flour, sugar, mustard, 1 tsp salt and pepper.  Mix well  Add vinegar, 2/3 cup water and celery seed.  Cook for several minutes until mixture thickens.  Pour over cooked potatoes in slow pot ad top with knockwurst.  Cover and cook on high for 45 minutes.  Sprinkle with parsley and serve!