Place a vessel over medium heat and drizzle a few tablespoons of oil. When the oil heats up, add mustard seeds and split black gram.
1 teaspoon mustard seeds, 1 teaspoon split black gram, 3 tablespoon coconut oil
As the mustard seeds start to sputter, add red chilies, curry leaves and continue to saute for 30 more seconds.
5-6 Curry Leaves, 1 red chili
Now add sliced green chilies, and chopped onions and saute it until onions turn transparent.
1 large Onion, 4 green chilies
Add turmeric powder, red chili powder, saute for at least a minute.
1 teaspoon turmeric powder, 2 teaspoon red chili powder
Add salt, tamarind paste and continue to saute for 30 seconds.
1 tablespoon tamarind paste
Now, gently mash the boiled potatoes(I cooked my potatoes in Instant Pot pressure cooker) and add to the spice mixture.
4-5 medium-sized Potatoes
Add a little water(¼ - ½ cup) to help mix the masala uniformly.
Mix well and cook for another 5 minutes. Garnish with cilantro/coriander leaves.