3 ms·
A Keurig brews at 192 degrees by default. After dispensing into a room temperature mug, it can fall 10-15 degrees. McDonald's served theirs at 190. 15 degrees m
by raisedbyninjas 10y ago
A Keurig brews at 192 degrees by default. After dispensing into a room temperature mug, it can fall 10-15 degrees. McDonald's served theirs at 190. 15 degrees may not sound like a lot, but it means the difference in 3rd degree burns is a few seconds vs. 10s of seconds.
- logfromblammo 10y agoWhen you're up above 80 degC, the difference between 2nd-degree and 3rd-degree burns is measured in tenths of a second. Granted, liquids don't stay that hot for long without a vacuum insulated vessel, but common sense says that you should not serve anything in a restaurant that can cause permanent disfigurement after a spill faster than the victim can possibly react to the situation. You might as well serve cups of 10 M HCl. It doesn't matter how well you label it as "CAUTION! Strong acid! Do not ingest or touch!" because eventually, everything in a restaurant will get spilled. Logically, you would either serve it diluted to 0.1 M instead, and then keep an open can of baking soda within easy reach, or you would sock something away for the victims' compensation fund every time you sold a cup. Everything spills in a restaurant. Everything. No exceptions. You absolutely cannot predicate your business strategy on the assumption that one particular thing will never get spilled on a customer. Every engineer knows Murphy's Law, and every last one could have predicted that serving 190 degF coffee will produce a nonzero quantity of hospitalizations. Brew at whatever temperature you need. But don't let any human near it until the liquid cools to a safer temperature.