Combine Lentils, Water And Bacon In Saucepan. Boil, Reduce Heat, Cover, Simmer 45 Minutes. Add Potatoes And Simmer 15 More Minutes. Stir In Vinegar And Sugar. In Saute Pan, Saute Onions And Parsley In Olive Oil, Until Onions Are Transparent. Stir Onions Into Lentil Mixture And Serve.