Thattai (meaning flat disc) are inexorably delicious crackers prepared in our family for Deepavali. It is so astonishing to find numerous varieties of thattai made all over India using various lentils, grains & spices, and hence it has varied flavour, texture or colour in every state, every district and also in every family.  These crispy savory discs have been given different names in different regions viz., thattu vadai in Salem, thattai murukku in Tamilnadu, nippattu in Karnataka, chekkalu in Andhra Pradesh, papdi in North India.