Peel and wash the water chestnut.
In a vessel take 1 cup water,add 1/2tsp salt. Add water chestnut and let's it boil.

Boil it 5-6 minutes,when they turn soft drain the water and keep in a strainer.

In a kadhai add oil and heat it. When oil turn hot add cumin seeds when they start splutter add water chestnut. Fry them for 1 minute.

Add red Chilli powder, salt and Chilli flakes. Mix and cook for 4-5 minutes on medium Turn off the flame.