For an unparalleled depth of flavor, consider searing the beef chuck roast in the Instant Pot on 'Sauté' mode before adding other ingredients. This Maillard reaction adds rich, caramelized notes. Ensure the roast is well-browned on all sides. After cooking, the beef should be fork-tender and easy to shred. A natural release is crucial for tender meat. For serving, shred directly in the pot with two forks to absorb all the flavorful juices. Garnish with fresh parsley or chives for a touch of color and brightness.