Boil potatoes with turmeric and salt.

Peel skin and mash them and keep it aside.

Heat oil in a pan or a kadai.

Splutter mustard seeds.

Fry black gram, red gram, Bengal gram, asafoetida, turmeric powder, curry leaves, red chillies, finely chopped ginger, lemon juice and salt.

Add the mashed potatoes and mix well.

Let this cook for a few mins.

Garnish with coriander leaves.