Heat oil in a kadahi or pot on high heat. When the oil is hot, add the badis and fry on low heat till golden. Take out the badis and keep aside.
Now in the same oil add heeng, let cook for a minute, and then add jeera and methi seeds and the broken red chili pods.
After a minute when the seeds start spluttering, add chopped onion, garlic, and ginger. Fry till the onion is half golden.
Add the haldi powder, mix and add baigan pieces. Stir and fry for 2 minutes.
Add chopped spinach, badi, chopped tomatoes, and soya patta. Mix nicely.
Next. add salt and again mix and cover and cook till the baigan is fully cooked and the water is absorbed.
Add garam masala. With the spoon mix the baigan saag mixture to smooth consistency. Do not mash the badis.
Take off the heat, baigan saag badi is ready.