Wash, scrape the outer ridges and cut the bitter gourd into 4 sections length wise scoop out the sides and slice them in quarters . Apply salt and leave it for 30-40 minutes and squeeze out the karele ka juice.
Meanwhile dice and boil potatoes. And prepare the vegetables to be sauteed.
Prepare green chutney as per your home recipe I made my chutney using coriander, curd ginger ,chili and salt sugar and oil and lime juice .
Once you have squeezed out the bitter gourd juice . In a pan heat up oil . Add sliced onion and caramelize them till golden add in the sliced garlic chilli and sauté till it softens Add in your bitter gourd add salt and sauté it . Add mushrooms till it releases water and slightly shrivels. Check for bitter gourd doneness finish with curd, sugar and amchur powder.
In a bowl take the chopped tomato, onion, potato, raw mango, tamarind chutney (mine was store brought) green chutney, Sautéed bitter melon mixture, salt, nylon sev and mix well with the puffed rice.
Check for the balance of taste and finish off with a squeeze of lime if need be. And yes a little coriander never hurts.