Take a clean plate in which you are going to light the rice flour lamp. Decorate the plate with kumkum and turmeric in a preferred way. Take the rice flour on the plate.
Then add the powdered jaggery, cardamom powder, ghee (2 tbsp), and edible camphor.
Gently mix and press the flour mix tightly on the plate and form a small mound-like structure. At the top, make a small dent that will fit the cotton wick and ghee. Make sure the dent is deep so that the ghee doesn't overflow.
I made my cotton-wick. But you can use the store-bought one. For the homemade one, take a small piece (marble-sized) cotton and flatten it. Take a small portion from the center, thin it, and form the wick like below.
The rice flour lamp is now ready.
The pooja procedure:
I place this prepared rice flour lamp tray on a wooden board. Then place some coconut and fruits on either side. We also keep betel leaves; I skip them if I can't source.
Now I place this in the pooja room, add the ghee(1 to 1.5 tbsp), and light the lamp. We also offer a sweet and savory dish as neivediyam.
When the ghee is almost exhausted or when the burning wick reaches the flour, remove the burning wick before it is extinct and place it on a plate-like below. Keep an eye on the lamp, and don't let it overburn.
Once the pooja complete, you can mix the rice flour mixture and add little milk, ghee, or water and make it into small laddus and enjoy.
Notes
As I mentioned before, every family have their way of preparing this lamp and the pooja procedure. I have shared what we follow.
Adding edible camphor elevates the flavor of this rice flour mix, and if you can source and add them, please do try with edible camphor.
Adjust the amount of ghee as required. If you don't have powdered jaggery, you can also grind the rice flour and jaggery together and the flour will bind more easily in this case.
Do not add water while preparing the lamp.
Also, keep an eye on the lamp after you light it. Do not let it burn thoroughly.