Wash the goat meat well, dry and rub with salt and 1 teaspoon of turmeric powder. Set aside for 10 minutes.
Heat oil in the pressure cooker, put in 1/2 teaspoon of sugar and let it caramelize. As it browns, put the potatoes in and fry them till they get a golden hue. Take them out.
Add cardamom, cloves and cinnamon stick. Add onion, garlic and ginger. Stir till it is soft and golden. Add tomatoes and remaining turmeric powder and chilli powder. Keep stirring for 5 minutes. Add goat meat. Stir for 10-15 minutes to let it blend well with spices. Pour in two cups of water (enough to cover the goat meat). Cover and pressure cook for 15 minutes.
Switch off the gas, let the steam release by itself, and then open the lid and check the salt. Add rest of the sugar. Prick the goat meat with a fork to see if it is done. Put the fried potatoes back in the pressure cooker with the goat meat. Add 1/2 cup water and cook it up to two whistles. Switch off the gas; let the steam release, check the salt again and transfer goat meat to the serving dish. Garnish with coriander leaves.