Thattai is a crispy snack that is also prepared as one of the neivedhyams during Krishna Jayanthi. If you have rice flour and urad dal flour ready then you can make thattai within 20 minutes. In case if you do not have urad dal flour you can use roasted gram powder( பொட்டுக் கடலை மாவு) instead. With the following measurement you can make around 15 thattais.
Let the thattais cool for about 10 minutes. Do not place them in a container and close them immediately.It will become soggy. So wait for sometime and then store it in a container. The ratio of Rice Flour : Urad Flour/Roasted Gram Flour is always 3 : 1.