In a separator soak moong dal for 20 minutes in 3/4 cup hot water
Add turmeric water and close with a lid
In another separator add the chopped ridge gourd and salt (no need to add water); close with a lid
Take a cooker and add some water and place the dal at the bottom; cover with a lid
Add the vegetables at the top and cook for 3 whistles; let the pressure release naturally
In a pan add ghee and when ghee is hot add mustard seeds and let it splutter
Add curry leaves and saute till it turns crispy
After sauteing curry leaves add cooked dal, vegetable, salt, pepper-cumin powder, and coriander leaves and mix well
Based on the desired kootu consistency add water if necessary and boil for 2-3 minutes
Add hing and switch off