آش is a traditional Persian soup that is popular in Iranian cuisine. It is typically made with a variety of ingredients, including legumes, vegetables, and herbs. Commonly, it features ingredients like lentils, chickpeas, and spinach, creating a hearty and nutritious dish. There are many regional variations of آش, with each area adding its unique twist. One well-known type is آش رشته, which includes noodles and is often garnished with kashk (fermented whey) and fried onions. This dish is often served during special occasions and gatherings, highlighting its cultural significance in Iran.