Preparation: If you have time or have planned to make this chaat, I recommend cooking the potatoes and Channa dal in the instant pot ahead of time. The potatoes and channa dal need to be cooked only 80%, as they will cook completely when being shallow fried.
Pressure cook the Russet Potatoes in the Instant Pot 12 minutes followed by a natural pressure release if you have the time for 15 mins followed by a quick release.
Pressure cook the unsoaked Channa dal either in the Instant Pot for 12 minutes followed by a quick pressure release or on the stove top until slightly tender to touch.
Prep the yogurt in a mixing bowl, by whisking the yogurt with roasted cumin powder, kala namak and sugar and keep aside to chill. The yogurt should be thick pouring consistency not runny.
Peel & grate the potatoes after bringing them to room temperature using the bigger side of the grater. Do not mash the potatoes. Read tips for why I don't recommend it.
Coat the potatoes with the rice and corn flour by sprinkling the flour evenly on them and then coating the shreds without mushing them. Next add the kala namak, roasted cumin powder and oil and coat the spices to the shredded potato, again without mushing them and keep aside while you spice the dal.
Prep the dal stuffing by draining any excess water from the dal. Heat a wok or pan with oil and on medium temper it with chopped green chilies or paste, red chili powder, chaat masala, roasted cumin powder & ginger. Stir until aromatic and add the drained dal and salt to the wok and cook until you lose the moisture for about 5 minutes.
Making the Tikki. Scoop a handful of the potato mixture and combine the mixture to form a ball. Next flatten the ball and using your thumb make a well to add a teaspoon of the channa dal stuffing. Seal the edges of the tikki. Repeat to prep the remaining tikkis.
Shallow Fry the Aloo Tikki using ghee or oil in a pan. Experience has taught me a deeper pan will help crisp the sides of the tikki instead of using a dosa pan or you follow the air fryer instructions below. As the tikkis cook, make sure to press the tikkis gently with your spatula or potato masher so the tikkis can crisp even further.