Once the oil is hot, add the chopped garlic and green chili and sauté for a minute.
Then add the onions and cook until they turn translucent.
Now add the tomatoes, salt, and turmeric powder. Mix them.
Add the washed dal mix and 3 cups of water and mix well.
Set the IP in manual mode and pressure cook for 10 minutes and let the pressure release naturally.
Carefully open the lid and when the pressure is all released and mash the dal. If you need thick consistency, then set the IP in sauté mode and let it simmer for five more minutes, if not set it warm mode.
That's it. Serve the dal with rice.
Pressure Cooker Method
Pressure cook the washed dal by adding 3 cups of water for up to three whistles.
Heat a pan or kadai and add oil.
Then add the onions and cook until they turn translucent.
Now add the tomatoes, salt, and turmeric powder. Mix them.
Cook until the tomatoes are soft and mushy.
Then add the cooked dal and mix them.
Adjust the consistency and let it simmer for 5 minutes and that's it.
Notes
I would recommend an equal measure of three dals, but you can adjust the proportion and measure as per your preference.
And same goes with spice and salt too.
Adapted from Desi Fiesta