Potato curry

This is a simple recipe which almost everybody will know. My brother had once asked for this recipe and I gave it to him but I don't know if he managed to get it right.So today I am posting the recipe here just for my little brother to help him to cook this simple but yet a great potato dish whish is one of our favourites.

1 large potato,
1 medium onion finely chopped,
2 green chillies finely chopped,
1/2 medium tomato finely chopped,
mustard seeds,
cumin seeds,
few curry leaves,
2-3 garlic cloves fnely chopped,
1/4 tspn turmeric pwd,
a pinch of asafoetida(optional)
coriander leaves,
oil.

Method:
Cut the potatoes into mediem sized cubes, boil the potatoes in water with salt and the turmeric pwd.Once the potatoes are boiled keep aside along with the water.
In another pan heat oil, splutter mustard seeds,cumin seeds, add the curry leaves, garlic,asafoetida.Than add the onion and chillies when the onion is golden brown add the tomatoes.When the tomatoes are bit mushy add the potatoes along with the water. cook for few mins lightly mash the potatoes to thicken the gravy. Garnish with coriander leaves.