Add all of the meatball ingredients except the olive oil to a bowl and mix together. Form the mixture into meatballs.
Set the pot to saute and add the oil.
When the oil is hot add the meatballs and roughly brown (you might need to do this in 2 batches). Remove the meatballs and set aside.
Add all of the sauce ingredients to the inner pot and stir well together (deglaze if necessary).
Put the meatball into the sauce and add a tall trivet to the pot. Now add the prepared rice with the boiling water in a suitable container.
Put the lid on the instant pot and set on high pressure for 7 minutes.
Leave under pressure for a further 7 minutes and then do a quick release.
Remove the rice and set aside.
Set the pot to saute. Remove around 5 tbsp of liquid from the sauce and add to the cornflour in a bowl. Mix well together and add back to the pot. Stir in until the sauce is boiling and thickened (around 2 minutes)
Serve over the boiled rice with a garnish of sesame seeds.