Ash-e jo is a hearty Iranian soup which combines barley and various beans and lentils. It appears in numerous varieties and can be complemented with various vegetables, spices, and fresh herbs. Even though meat is easily incorporated into the soup, it is not a traditional ingredient used in the preparation of ash-e jo.

The soup is characterized by its thick texture and a slightly sour taste provided by freshly squeezed lemon juice and barberries.