A couple of little points re pressure cookers.
If you cook too long, flavours disappear. I use my PC (that's Pressure Cooker!) to produce stews and curries. I use meat like turkey thigh or pigs cheeks and you have to cook these for a while to make the meat tender. I find 30 minutes is about right for turkey thigh and 45 - 60 minutes for pigs cheeks.
However, any longer and the flavour turns to a sort of muddy brown taste.
For curry, I add half the normal amount of sauce or paste at the start of the cooking and add the other half just before serving. Stir the second half thoroughly to mix well.
Also, I use my PC to cook rice. Brown rice is nice but needs longer cooking than white. But in the PC, brown rice takes 20 minutes.
NB All times are from when the PC is up to full pressure NOT when it goes on the hob cold.
If you want to cook anything with sugar in it, like tomatoes in the curry mix, bring the PC up to boiling with the lid off and keep stirring. Then put on the lid and lower the heat to about half as you can't stir the mixture any more once the lid is on.