7. Assemble Stock
Transfer the roasted vegetables to the pot, making sure to scrape in as much of the roasted bits as possible. Add the parsley, thyme, bay leaves, and peppercorns to the pot. Cover with the water.
Use a wooden spoon to submerge any ingredients that are sticking out. Insert the probe, taking care that it is not touching the bottom of the pot. Wrap the cord around the pot's handle to keep the probe in place.