Soak chana dal for 12 to 15 hours.
While soaking add dry red chillis also.
Drain excess water and keep aside.
In a blender jar add soaked chana dal, red chillis and cumin seeds.
Grind them to make a smooth paste.
Do not add water.
Add very little water while grinding, only a spoonful at a time to make blender move smoothly.
Grind chana dal to make smooth and stiff paste
Pressure cook blended chana dal paste for 3 whistles.
Once the pressure goes off take it out and mash it to make crumble.
Heat oil in a kadai, add chana dal and urad dal.
When the dals started changing the colour, add mustard seeds and cumin seeds.
Saute them till they crackle.
Add asafoetida, red chillis and curry leaves.
Add crumbled chana dal paste and fry it on low flame.
Add salt and turmeric powder.
Add red chilli powder if dry chillis were not included while grinding just before switching off the flame.
Mix well and fry till the chana dal crumble turns into crisp.
It would take 10 to 15 minutes time, fry it only in low flame.
Serve patoli with hot piping rice accompanied with hing oil and fried red chillis.