Foryoueats: Easter White Borscht

9 cups water

3 pounds kielbasa sausage

2 cloves garlic, whole

3 tablespoons unsalted butter

2 leeks, chopped

1 medium white onion, diced

3 cloves garlic, minced

2 large bay leaves

1 ½ cups sour cream

¼ cup all-purpose flour, or more as needed

¼ cup chopped fresh dill

2 tablespoons distilled white vinegar, or more to taste

salt and ground black pepper to taste

4 large hard-cooked eggs, chopped

Easter White Borscht