Cut the watermelon rind into small cubes.

Peel the potato, cut it similarly and put it in a bowl of water.

Take oil in a pan, add cumin seeds. As it splutters, tip in green chilly. Put the potato pieces and give a stir. After a minute, put the rind pieces to it. Put salt, sprinkle some water and allow to cook.

Once they are tender, add turmeric powder, chilli powder, coriander seed powder and garam masala to it. Cook for two minutes, let the flavours seep in.

Garnish with coriander leaves.

Serve with phulka.