In Hinduism, Yajna is a ritual of sacrifice derived from the practice of Vedic times.A Vedic (shrauta) yajna is typically performed by an adhvaryu priest, with a number of additional priests such as the hotar, udgatar playing a major role, next to their dozen helpers, by reciting or singing Vedic verses.The Namboodiri Brahmins of Kerala, India are among the most famous Shrauta Brahmins who maintain these ancient rituals.