Rice flour is used in various preparations like murukku, seedai and even few other recipes in my website. Some needs freshly ground rice flour. I have used idiyappam flour in most of my recipes as a shortcut which works like a charm, but if you want to go by the authentic way, here is how we have to prepare the rice flour. Also some recipes like kai murukku, seedai needs homemade fresh rice flour. So this will be apt for those recipes.
In Tamil Nadu local grocery shops, one can get a specific rice called ‘Maavu arisi’ which is meant for making rice flour. It will work the best and yield good results. But no need to panic if you dont get, just use any raw rice. I use sona masoori rice variety which works fine too. If you are deciding to use readymade rice flour, buy finest rice flour which will be perfect for the snacks. Coarse powder will not be that good.
Use as required in the recipes. I have never stored this, I grind and make use of it freshly. I have heard, if its stored, it gives typical smell (seendal) so better use it up.