We will first look at the steps for making homemade rice flour. You can jump to step 6 if you are using store bought flour. Wash and soak any raw rice like dosa rice in water for 2 hours.
Now drain the water from the rice completely and spread it evenly on a cotton cloth like white dhoti or a towel. Let this air dry for around 30 minutes or until the rice is almost 90% dry. Having slight moisture in the rice helps in easy grinding of the flour.
Now blend the rice flour in mixer in batches till it is very fine.
Sieve the flour after grinding each batch. The leftover rice flour in the sieve can be ground again till it is fine.
Repeat this process until all the rice is finely ground. Homemade rice flour is ready now and can be stored for 3-4 weeks. At the end of this process you should be left with only a small amount of coarse rice flour from the sieving and this could use this for either making Ma Kolam or feed to birds.
If you do not have Urad dal powder, follow these steps to make the urad dal powder, else you could jump to step 9. Take around half cup of whole urad dal and dry roast on medium flame till you get aroma. The urad dal should not turn brown or golden, however it should just slightly change colour.
Cool the urad dal and grind in mixer till it is a fine powder.
Sieve the urad dal flour and discard the leftover flour in the sieve. Urad dal flour is ready now.
Dry roast the previously prepared homemade rice flour or the store bought flourflour in a kadai on medium flame only until you just start seeing some steam coming out of the flour or the flour is warm on touch. Do not dry roast for too long and the rice flour should not change colour.
Cool the rice flour and sieve again so that there are no lumps.
Take half cup of jaggery (do not tightly pack the jaggery in cup) and add to kadai. If you are using jaggery powder, slightly reduce the quantity as it would alter the proportion.
Now add exactly ¼ cup of water to this and cook only until the jaggery melts. It need not boil or become like syrup.
Filter the melted jaggery.
In a mixing bowl take 1 cup of the dry roasted and sieved rice flour and add 1 tablespoon of previously prepared urad dal flour, sesame seeds, room temperature butter, cardamom powder and grated coconut and mix well.
Now add the filtered and melted jaggery and mix using a spoon initially as the jaggery would be hot.
Once incorporated, mix the dough using hand. Add water little by little if required and mix and knead till you get a firm dough. You might roughly require around 3 tablespoons or maximum of another ¼ cup of water to achieve the desired consistency.
Now let this dough rest for around an hour. It should rest for a bare minimum of 30 minutes if you are in a hurry. This would ensure that the moisture in dough is reduced and seedai does not burst while frying. The texture of the dough should look as in the image and you should be able to roll balls out of it easily.
Now take a small portion of the dough and roll using your fingers as shown in image. Once rolled between fingers, you could then slightly roll between palms to achieve a more spherical shape. However do not roll tight. Also, the balls should be roughly 2 cm in size and not smaller or larger than that.
Continue rolling the balls using the remaining dough.
Heat oil in kadai and once it is just hot (it should not be too hot), reduce the flame to low and drop the vella seedai balls in oil gently. You could fry around 8 to 10 in one batch. Do not disturb the seedai in oil at least for a minute or two, else it might break.
Continue cooking in low flame and once the colour starts changing slightly, you could toss the seedai.
Once the seedai achieve dark golden brown, drain the seedai from oil.
Continue frying the remaining seedai in batches.
Once the seedai cools, they would harden and you could then store in an air tight container.