The fourth day of Diwali celebrations is called as Govardhan Puja, also known as Godhan Puja. Goverdhan puja is an occasion to worship Lord Krishna.
According to Vishnu-Puran, the people of Gokul commemorated a festival in honor of Lord Indra and worshiped him after the end of monsoon season every year. In his young years, Lord Krishna once prohibited the people from offering prayers to Lord Indra. Angered Lord Indra sent a torrent to sink Gokul. ‘Govardhan’ is a small hillock situated at ‘Braj’, near Mathura. Lord Krishna to ensure Brajwasis’r security and after performing worship and offering prayers to Mount Govardhan lifted it as an umbrella on the little finger of his right hand so that everyone could take shelter under. Thus, Lord Krishna protected Brajwasis from the torrential rains of Lord Indra, After this event, Lord Krishna was also known as Giridhari or Govardhandhari.
People make mountain shape with cow dung and worship it with flowers, rice, roli, moli, sugarcane, and other pooja samagri. Deities are given milk bath, adorned with bright attires and precious ornaments. Pious and Religious people prepared a variety of food also known as Chhappan Bhog to Krishna. With traditional customs and prayers, the variety of sweets and food is raised in the shape of mountain as bhog to deities. Worshippers take this bhog as Prasad after offering it to the god. This ritual is called ‘Annakoot’.
The fourth day of diwali celebrations is also observed as Anna-Koot, which literally means ‘mountain of food’. On this auspicious day the people prepare fifty-six or one hundred and eight different varieties of delicious dishes to offer Lord Krishna as ‘Bhog’.