In a bowl add the broken dry red chillies, hot water, cover the bowl and let the chilly soak in the hot water while you make the other ingredients ready. Drain the water and grind the chillies into a paste.
In a saucepan dry roast the black sesame seeds till it starts to crackle. Turn off and grind them into fine powder or you can keep it coarsely pounded.
In a pressure cooker add the pork, salt to taste and some water and pressure cook the pork for about 10 mins or till the pork is cooked. It will not take more water to cook the pork so add less water accordingly.
In a pot heat the mustard oil till smoking hot. Add onion, green chillies, ginger garlic paste and saute till the onion starts to brown.
Add the chilly paste, turmeric powder, salt to taste and saute for about 2 mins.
Add the cooked pork, mix well, cover the pot and cook for about 10 mins in medium heat stirring it occasionally.
Add the sesame powder, stir and mix them well together nicely.
Add the left over pork stock if any or you can sprinkle little water and cook for 5-10 mins and take off the heat