First keep remember that whenever you use grated potatoes.always keep them in water bcuz it's remove extra starch and keep them whiter.

Just before starting take grated potatoes and add all the spices with some water to make thick mixture

Grease the pan and dip one round piece of bread in mixture both sides then put on pan and keep roast at medium flame from both sides

Enjoy yumm crunchy very easy tikki at home.stay safe stay healthy and happy