Polish Dill Pickle Soup

Name: Polish Dill Pickle Soup
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: European
Ingredients: 4 cups beef broth; 2 cups vegetable broth; 1½ pounds new red potatoes, peeled and sliced into bite-sized slices; 2 tablespoons butter; 3 tablespoons all-purpose flour; 1 cup whole milk; 2 egg yolks; 2 cups shredded dill pickles (shred on large holes of a grater); 2/3 cup pickle liquid