Amavasya Tarpanam is a ritual performed to offer homage to one's ancestors. It is a significant part of various South Indian traditions, including those followed by Sri Vaishnava sampradayam followers. While the core concept of Tarpanam remains the same across different Brahmin communities, there can be variations in the specifics of the ritual and the ingredients used. 

Buy the Amavasya Tarpanam set for Sri Vaishanava from GiriUK. The set consists of ample quantities of Darbhai, Pavitram and Koorcham - all Kusha grass made for Iyengars !