Cook the potatoes in a large pan of boiling water for about 20 minutes, or until soft.
Drain, allow to cool, then peel off the skins. Return the potatoes to the pan and mash with a potato masher. Set aside.
Soak the dried fenugreek leaves in a bowl of water for a few minutes, then drain and crumble. Set aside.
Put the ground spices in a small bowl, add 1 tablespoon water and stir together.
Heat the oil in a kadhai, wok, or deep, heavy-based frying pan (skillet) over medium heat, add the asafoetida, and stir-fry for about 30 seconds. Add the cloves and bay leaf and stir-fry for a further 30 seconds.
Add the ground spice mixture and the ginger and fry for another 30 seconds.
Pour in about 1 litre / 1 3/4 pints (4 1/4 cups) water and bring to a boil. Add the mashed potatoes and season with salt.
Reduce the heat and cook for about 8 minutes, or until it has reached the desired consistency. Add the crumbled fenugreek leaves and mix well.