Start by slicing your rib of beef into a max of 2 ribs so that it will fit in the instant pot and remove the bones. The bones can then be put to one side for beef soup, beef stew, or beef stock.
Spray the rib roast with extra virgin olive oil (approximately 2tsp). Season the rib roast with salt, pepper, and garlic powder. Place in the fridge overnight to marinate.
The next day peel and dice your onion and sauté with the rest of the olive oil. When the onions start to change colour, turn off sauté and deglaze with red wine. Add in beef stock if using thawed.