Heat the oil in a large saucepan and fry the onions until golden brown. Reduce the heat, add the ginger, all the spices, chilli and coriander to the onions and continue frying for a few minutes - don`t forget to stir. Then add the potatoes and the water and stir well - add the chickpeas and simmer, stirring occasionally. Possibly add a little more water if it boils over before the potatoes are done.
When everything is done, season with the lemon juice and salt.
You can serve chapatis and a raita with it and a spicy chutney goes wonderfully with it.
Note: you can also use canned chickpeas, you should then use a large one that is approx. 500 g.