Helpful hints: A very gentle simmer over medium-low heat (or whatever heat will achieve this on your stove) minimizes vinegar fumes and possible scorching of the pan. To easily clean your pan if it becomes scorched (the vinegar mixture can leave a burned residue around the edges – and just a good anytime tip!), cover the affected areas with a paste of baking soda and water and let sit for an hour or more. If it doesn’t scrub off easily at this point, scrub with a crumpled piece of aluminum foil, adding a bit more baking soda, which acts as a gentle abrasive, as needed. (For nonstick or ceramic pots, use a scrubber that is appropriate for those pans, as the foil will scratch them.)