Cooking a tender pork shoulder from frozen in an Instant Pot is incredibly straightforward and yields delicious results. First, place your frozen pork shoulder directly into the pot. You don't need to thaw it, which makes this method remarkably convenient.

Next, season the meat generously with salt, pepper, and your preferred spices or marinade. Pour in about a cup of liquid – stock, water, or even apple cider works beautifully – to create the steam necessary for pressure cooking.

Secure the lid and ensure the valve is set to "sealing." Set the Instant Pot to cook on high pressure for roughly 60 to 75 minutes, depending on the size of the pork shoulder. Once the cooking time is up, allow for a natural pressure release for about 10 to 15 minutes before manually venting any remaining steam.

When you open the lid, the pork should be incredibly tender and easily pulled apart with a fork. Serve it with your favourite sides, or use it in tacos, sandwiches, or a hearty casserole. Enjoy your brilliantly soft and flavourful dish, all thanks to the magic of the Instant Pot!