Heat up 5 tbsp oil in pressure cooker and add in blended spice paste. You want to fry this for 5-10 mins till fragrant. Add in beef and mix. Pour in coconut milk and mix.
Add in dried tamarind, kaffir lime leaves and turmeric leave shreds.
Cover pressure cooker and cook over medium heat until indicator rod comes up. Once the indicator is up, turn down heat slightly - and pressure cook for 15 mins. After 15 mins, switch off flame and release pressure. Once pressure is released, open lid. You will see quite a bit of liquid here, DON"T panic. It will be cooked down.
Switch on flame again, put in seasoning and kerisik and cook for further 30 mins or till gravy is cooked down and to your liking. Stirring on and off esp towards the end.
Towards the end, you will see the rendang has been cooked down, gravy much less and beef is tender. Taste. If you think it's too spicy add just 1/4 tsp sugar. Let the rendang rest.