Firstly, in a large bowl take 1/2 cup idli rice.
Soak in water for 6 hours.
Drain the water and transfer it to mixer grinder jar.
Grind to a smooth batter adding some water as required.
Transfer the batter to a large bowl.
Add salt, sugar and sesame seeds and mix. Pour 1/2 cup coconut milk and 1 egg. Stir to combine together.
Add some water if required if its thick to make it pouring consistency.
Heat a heavy bottomed container with enough oil upto 3-inchs to submerge the mould. Place the mould in oil completely covering the whole mould till the top.
When the mould is heated you will know when it radiates heat by placing you palm few inches away from it (careful not to touch it)
Dip the mould in the batter making sure the sides are 3/4 covered in batter (see picture below). Hold steady in the batter for minimum 10 seconds and not less (it is important because otherwise it will form a shape in the batter itself and batter will not cling to the mould).
After 10 seconds immediately place the batter covered mould completely dipped in hot oil to deep-fry (induction #6). You will see the oil bubbling, hold it in oil for at-least 10 seconds then gently shake the mould to release the cookies.Use a wooden skewer to release it from the sides. Meantime, leave the mould in hot oil for few seconds until your ready for the next cookie and continue with step 4. Depending on the size of the container used you can fry more than one but just make sure you have enough space to dip the mould after each cookie.
Flip them with the wooden skewer to fry evenly until light brown color on both sides.
Remove the fried ones and place them on kitchen paper towels. Repeat from step 4 until all the batter is used.
Leave them to cool completely before storing them in an airtight container or airtight storage bags.