In a large pot, add beef shank, paya, and all the stock ingredients.
Pour enough water to cover the meat (do not exceed the pot's maximum fill line).
Close the lid and set the valve to the seal position.
Select pressure cook mode high settings and set the time to 15-20 mins. Times may vary.
Once done, let the pressure release naturally for about 15 minutes, then carefully release any remaining pressure.
Strain the stock, keeping the broth and cooked meat aside.