Persian Noodle Soup (Aash Reshteh)

"Aash Reshteh or Persian noodle soup, packed with herbs and nutritious beans, is the ultimate comfort food for chilly fall and winter days. Each bowl is decorated with caramelized onions, fried garlic, mint oil and kashk. Kashk is a dairy product made with drained sour yogurt and gives this soup a distinct sour flavor."