Transylvanian Green Bean Soup Recipe

In a large pot over medium heat, combine green beans, garlic, parsley, salt and water to cover and cook until beans are tender. Put beans aside and retain bean water.
Fry bacon until crisp, set aside. Add onion and flour to bacon grease, stirring until smooth and brown. Add the liquid from the beans, stirring slowly and constantly to prevent lumps. Cook to thicken a bit, then add the reserved beans and bring to the simmer. Stir in bacon, sour cream and vinegar.