During Amavasyai plantain, moong dal, colocasia, bitter gourd, cucumber and agathi leaves can be used; whatever vegetables that are used during shrarddham can be used for this as well.
NOTES
As Vaidya Veeraraghava Perumal appeared on Thai Ammavasyai day, some prepare special feast to celebrate the day. The regular kuzhambu and satruamudhu can be prepared along with the feast. Avoid using brinjal and beans on tharpana days. During the beginning of a new month, it is in tradition to prepare food using toor dal and it is also in practice to cook food with moong dal on tharpanam days.