I searched for awhile to find a recipe that didn't have added sugar, and this one is terrific. Good thing I doubled it because it didn't last. Recipe posted as listed. Courtesy of gnom-gnom.com. Serving size is estimated.
Pat meat dry and cut into large cubes. Season lightly with salt and freshly ground black pepper and set aside.
Set instant pot to Saute and heat olive oil. Add meat (working in batches if needed), and sear for 3 to 5 minutes on each side until browned. Press cancel to turn off heat.
Add in remaining ingredients, squeezing orange into the mix before adding it inches Yes, you want the whole orange in the mix. Toss to combine.
Lock lid in place, close pressure valve and press Meat. Adjust cooking time for 30 minutes and cook. Allow pressure to release naturally (roughly 20 minutes). Remove lid and shred meat with two forks (in the instant or a tray).
For crispy carnitas: Turn on the oven broiler while carnitas are cooking. Once meat is shredded, transfer to a baking tray along with some of the juice and broil for 3 to 6 minutes until the edges begin to brown and crisp.