Use a Plate to Check if Your Gravy Is 'Done'

If you’ve ever made gravy, or any sauce or similar food to which a thickening agent is added, you know that it acts quite differently once you take it out of a hot, simmering pot and get it on a plate. Gravy, jams, and many sauces all thicken as they cool, and it can be hard to tell when they’re “done” while they’re…