Place the oil in the bottom of your Instant Pot and turn pot to Saute. Let oil preheat.
Season both sides of the meat very well, and place into the hot pot.
Brown both sides, being careful not to scorch the meat.
Add in the hard cider, and place lid on pot.
Run a 60 minute pressure cook cycle, use natural pressure release (just let it naturally fall and release instead of using the valve), and check the tenderness of the meat. If it needs more time, re-close it and run for another 10 minutes of pressure cooking.
Once the meat is tender, remove from pot and slice against the grain.