January 14th is the birth of the Tamil month of Thai, and in Tamil Nadu, it is also Pongal, the harvest festival. It is a grand celebration with several vegetarian dishes marking nature’s bounty. Aviyal is a vegetable curry that is served for lunch. There are several versions of aviyal, and I am presenting here the aviyal made in Palayamkottai, Thirunelveli District. It uses many of the vegetables indigenous to Thirunelveli.