Heat the oil in a non-stick skillet and add the cumin seeds.
When the seeds crackle, add the potatoes, mix well, cover with a lid and cook on a medium flame for 10 to 12 minutes or till the potatoes are cooked, while stirring occasionally.
Add the red chili powder, turmeric powder, lemon juice, salt and cilantro, mix well and cook on a medium flame for a minute or two, again stirring occasionally.