I am using instant pot; I am using the instant pot instead of pressure-cooker. Not
for saving time but ease of use.
Heat one tablespoon of oil in instant pot on sautéed mode. Oil should be moderately hot, add moong dal vadi stir-fry till they are light golden brown this should take about 1minute. take out the vadies from instant pot.
Add remaining 1 tablespoon of oil, in instant pot keeping on sautéed mode oil should be moderately hot and add cumin seeds. When seeds start to crack, add the asafetida, stir and add tomato puree, ginger, coriander powder, turmeric, salt and chili powder and cook stirring occasional till spice mix start leaving the oil.
Add bottle gourd, vadies and 1/2 cup of water. Change the setting to pressure cook on high mode. Set the time for 6 minutes. (At this time instant pot is working just like pressure cooker, it will take same time building the pressure and after cooking releasing the pressure as pressure cooker, advantage is you can take care other work you have to do or even if you have to go out.)
Open the instant pot when you are ready. After you open the instant pot adjust the water if you need more, add garam masala.