Pressure-cook or slow-boil the washed Tuvar dal with 3 cups of water, a pinch of turmeric, and a drop of oil until completely soft. Blend into a smooth emulsion using a churner or whisk.
Combine whole wheat flour, besan, salt, and dry spices. Rub in groundnut oil until the mixture resembles coarse sand. Add ice-cold water gradually and knead into a stiff, firm dough. Rest for 20 minutes covered with a damp cloth.
Divide dough into 3 equal portions. Roll each out to 1.5mm thickness. Cut diagonally at 45-degree angles to form diamond shapes. Use a drop of oil — not dry flour — for rolling.
Bring the dal to a gentle rolling simmer. Stir in kokum, jaggery, ginger-chili paste, raw peanuts, and ground spices.
Drop dough diamonds into the boiling dal one by one, stirring gently after every few additions to prevent sticking.
Lower heat to medium-low, cover, and poach for 12-15 minutes until dhoklis turn translucent amber and float to the surface.
For the tadka: heat ghee until shimmering. Add mustard and cumin seeds. When they crackle, add broken red chili, curry leaves, and hing. Flash-fry 5 seconds, then pour into the dal and seal the lid for 2 minutes.
Serve immediately in heavy metal or clay vessels, topped with a pour of hot ghee, finely minced raw onions, and a squeeze of fresh lime juice.