Heat oil in a pressure cooker.
Add cumin seeds and allow them to splutter and sizzle.
put in grated ginger in the pan and stir to cook for one minute.
Add bay leaf and fresh tomato puree.
Cook everything for 6-7 minutes while stirring in between.
When the masala starts to leave the sides of pan add turmeric powder, red chilli powder and coriander/dhania powder.
Cook the masala for a minute or two.
Add yogurt /curd and cook for 2-3 minutes while continuously stirring it so that curd does not split.
Season it with salt to taste. When adding yogurt in any recipe add it after dahi it helps to prevent curdling of gravy.
Now add sliced baingan/eggplants and coat them with masala and cover with the lid to cook for 2-3 minutes to soften them and absorb the flavour from the masala.
Add cut potato and mix them well. Add water and mix everything.
Now cover the pressure cooker with the lid, and cook the aloo baingan sabji for 2 whistles and allow the steam to release naturally.
Aloo baingan sabzi is ready to serve. You can serve the sabzi with chapati paratha or rice.