The devi at this temple is supposed to be the sister of the lord Kashi Vishwanath. Its a tradition to visit her just before you leave Kashi. You buy sea shells at this place and offer them to the God saying that the virtues of donating the shells goes to her while you keep the virtues of having visited the holy shrines in Kashi and bathing in the ganges. The trip to Kashi is expected to yield results only after completing this custom.