Ayyankovil Temple is located at Thalayolaparambu in Kottayam District in Kerala. The annual festival in the temple is observed on the Uthram nakshatra in Malayalam medam month.
The main deities worshipped in the temple are Ayyappa and Vishnu (Goshala Krishnan). Goshala Krishnan faces east and Ayyappa faces west.
The subsidiary deities worshipped in the temple are Ganapathy, Bhuvaneshwari, Bhadrakali and Nandurga.
A unique offering to Bhadrakali here is narathala – a preparation made using rice and jaggery.
Ayyappa is offered ada without jaggery on all Saturdays.