Slice the beef into smaller chunks so it’s easy to marinate and cook
Add the juice of the lines, salt, ginger & garlic, pepper, all the spices and the vinegar and rub all over to coat the meat
Pierce the meat with some cloves and leave aside to marinate preferably overnight
Turn the Instant Pot on saute mode
Heat some oil and add the onions, chillies and a pinch of salt and allow to get golden brown
Remove the onions and add the chunks of meat to the pot and allow the meat to sear
Add the onions and chillies back in and all the remaining marinade
Add salt to taste and the water
Close the Instant Pot and set it to pressure cook for 20 mins
Allow the steam to naturally escape
Remove the meat and allow to cool
Add cooked potato slices into the gravy for a few minutes and remove
Slice the meat and add back into the gravy and serve with the potatoes