Peel koldil, you will find long flowers along with each layer.
Take out and throw the hard long stamens from each of those flowers. Go on removing the layers this way until you find the very tender white portion, chop it very fine along with these long inner flowers.
Fill a big bowl with cold water and rinse the chopped koldil thoroughly, squeeze water out of koldil and throw the water which has turned dark in colour. Repeat this 3 times.
Heat oil, put in all the ingredients and stir well. Do not add water, cook covered in low heat, stirring occasionally till koldil is cooked.
Delicious Koldil Bhaji is ready to serve with rice, roti or luchi(poori).