Thirukkadaiyur derives its name from the pot, called Gatam in Tamil. Vishnu, Indra, and the other Devas needed a sublime place to consume the ambrosia that had been churned during the Samudra manthan and, therefore, brought the ambrosia pot here. Before consuming it, they forgot to worship Ganesha, who is to be worshiped before any great undertaking. Ganesha, hurt and offended at the unintentional slight by the devas, stole the pot of Amrita and hid it at Tirukkadaiyur. Ganesha created a Shiva Lingam, dedicated to his father and mother, and poured some of the Amrita over it. The Shiva Lingam at this temple is known as Amrita Ghat Eshwarar, which, translated from Sanskrit literally means “Lord that leads to immortality” (‘Immortality’ (Amrita) ‘Step’ (Ghat) ‘Lord’ (Eshwarar)).