Rinse 1 cup of dried red chori beans and soak them in 2 cups of water in a large bowl for at least 4 hours or overnight.
Once you are ready to cook, drain the water and add the soaked red chori into the pressure cooker or Instant Pot along with 2 cups of water, and some salt. Pressure Cook for 2-3 whistles on the stovetop cooker or about 4 minutes on High Pressure (for firmer beans) in Instant Pot. Once done, natural pressure release and drain the water.
Heat oil in a pan, add mustard and cumin seeds and let them splutter. Then add urad dal and saute till the dal turns light golden brown.
Then add red chili, green chili, curry leaves, and asafoetida (hing). Saute for a few seconds.
Next, add the cooked red chori beans, and salt to taste. Gently toss and cook for 2-3 minutes on medium-low heat.
Next, add lemon juice, grated coconut and mix well again. Turn off the heat. Garnish with chopped coriander leaves.
Red Chori Sundal is ready to serve. Enjoy it as a healthy tea-time snack or side dish.