Polish Sorrel Soup

Name: Polish Sorrel Soup
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Cuisine: Eastern European, European
Ingredients: 6 cups cold water; 1 large carrot (peeled and sliced); 1 bunch fresh parsley; 3 medium potatoes (peeled and cubed); 1 bouillon cube (chicken or vegetable; or 1 tablespoon Vegeta); 1 bay leaf; 1 tablespoon butter; 1/2 pound fresh sorrel (washed, stemmed as for spinach and chopped); 1 cup sour cream; 1 tablespoon all-purpose flour; Salt (to taste); Freshly ground black pepper (to taste); Fresh dill (or parsley, chopped); 2 hard-cooked eggs (cut into quarters)