Desi cow ghee diya is a traditional Indian lamp made from cow ghee (clarified butter) and a wick. It is usually placed in a clay holder and used for religious or spiritual purposes, as well as for lighting during festivals and special events. The clay holder is also made of natural materials and provides a stable base for the diya. The warm glow of the ghee diya creates a peaceful and calming atmosphere, making it a popular choice for meditation and prayer.