This is a tangy soup that my mother used to make. I couldn’t find another recipe like it, so thought I would write it down for my own sake and share it for others.
Place potatoes and green beans into a large pot. Pour enough water over potatoes and green beans just to cover and season with salt and pepper; bring to a boil. Reduce heat to medium-low and simmer until potatoes are tender, about 20 minutes.
Place bacon in a large skillet; cook and stir over medium-high heat until evenly browned, about 10 minutes. Stir flour into bacon until flour forms a paste, 2 to 3 minutes. Mix bacon mixture into potato mixture; bring to a boil and cook until thickened, 5 to 10 minutes. Mix vinegar and sugar into soup.
Per Serving: 163 calories; protein 5.9g; carbohydrates 27.6g; fat 3.4g; cholesterol 8.4mg; sodium 187.4mg.