For this recipe, I like to use large potatoes. Start by giving them a good wash, then pressure cook them with ¼ teaspoon of salt until the pressure cooker whistles once. Turn off the heat and let the pressure release completely on its own.
Carefully open the cooker and take out the potatoes. Once they're cool enough to handle, peel them and cut each potato into 8-10 large chunks.
Next, roughly chop your tomato. Cut the green chilies into small pieces as well.
Now, heat ghee in a kadhai or deep pan.
When the ghee is hot, add the dry red chilies, cumin seeds, and a pinch of asafetida (hing). Let this sizzle for about a minute until fragrant.
Add the chopped tomatoes and ginger paste, cooking until the tomatoes soften and the ginger loses its raw smell, which should take around 2 minutes. You'll notice the ghee starting to separate from the mixture at this point.
Stir in the coriander powder, turmeric powder, red chili powder, and salt.
Cook on low heat for another 2 minutes, stirring constantly.
In a separate bowl, whisk the plain yogurt or curd until it's completely smooth.
Keep 2 cups of water nearby.
Now, add the smooth yogurt to the pan and quickly mix it in to prevent curdling.
Pour in the 2 cups of water and stir to combine everything.
Gently add the boiled potatoes. As you add them, take two or three pieces and lightly mash them into the gravy. Then, add the remaining potatoes whole.
Let the mixture simmer for about 5-6 minutes, allowing the gravy to thicken slightly.
Your Dahi Wale Aloo is now ready to enjoy!