When one wants to make celim (vessels) Kosher by purging non-Kosher absorbed tastes from it, one method is hagaleh, which normally is done with water. The Rema says in SA OC Siman 452:5 that b'dieved ...
In high-altitude cities, water boils at a lower temperature than the standard 212 degrees Farenheit. For example, in Denver the boiling point is about 203 degrees. Can one kasher utensils with hagalah ...