You don't have to spend big money on a great cut of meat to make a pot roast -- the Instant Pot tenderizes an inexpensive roast in an hour or less! This is one time where you can save a little and still have an amazing meal. With that being said, chuck roast (as it will be called in the United States) or blade roast (as it is called in Canada) is the most common choice for pot roast. It is not an expensive cut, but it has great marbling which leads to very tender meat. You can use other varieties, but one that is labelled "pot roast" in Canada will be your best bet!