> Liebeck's attorneys argued that coffee should never be served hotter than 140 °F (60 °C), and that a number of other establishments served coffee at a substantially lower temperature than McDonald's. The attorneys presented evidence that coffee they had tested all over the city was served at a temperature at least 20 °F (11 °C) lower than McDonald's coffee.
Reading through wikipedia's discussion of the trial and verdict, it sounds like the case hinged entirely on the temperature of the coffee being unusually high, and not the cup design.
https://en.wikipedia.org/wiki/Liebeck_v._McDonald%27s_Restau...
And no, there is no coffee professional (organization, individual, whatever) brewing coffee at 140*F.
Additionally - 140*F water is still going to burn if you spill it all over your clothing. Lastly, the customer removed the lid of the coffee while between her legs, which is how the cup was crushed and coffee ran all over her.
The case was absurd...
I don't understand how what you wrote gels with the grandparents comment of:
> Lastly, the customer removed the lid of the coffee while between her legs, which is how the cup was crushed and coffee ran all over her.
> Since Liebeck, McDonald's has not reduced the service temperature of its coffee. McDonald's current policy is to serve coffee at 176–194 °F (80–90 °C) [...] Similarly, as of 2004, Starbucks sells coffee at 175–185 °F (79–85 °C), and the executive director of the Specialty Coffee Association of America reported that the standard serving temperature is 160–185 °F (71–85 °C).[citation needed]
Any of this coffee can give you life changing injuries. That's why it is important that it be served in sturdy cups with safety warnings.
Which is probably too hot. See "A Review of Hot Beverage Temperatures—Satisfying Consumer Preference and Safety":
* https://ift.onlinelibrary.wiley.com/doi/full/10.1111/1750-38...
You don't chug your coffee on your way from the counter. You probably have some other items that you consume before you even start sipping on the coffee.
If someone serves me coffee at the perfect consumption temperature I'm going to be annoyed that it is way too cold and it is for sure going to be disgustingly cold at the time I actually consume it.
The correct temperature is supposed to be way too warm for consumption. Then you can sip at it while it is still too warm to drink comfortably while you "wait" until it is at your preferred consumption temperature (which varies wildly due to personal preference).
The same article says McDonald's own research showed the opposite.
> McDonald's claimed that the reason for serving such hot coffee in its drive-through windows was that those who purchased the coffee typically were commuters who wanted to drive a distance with the coffee; the high initial temperature would keep the coffee hot during the trip.[12] However, it came to light that McDonald's had carried out research finding that customers intend to consume the coffee immediately while driving.[22]
Further, I'm guessing but doubt that commuters wouldn't go to mcd just for coffee, whatever breakfast(?) maybe didn't last long enough for it to cool down. Sure, but that all depends.
And apparently, commuters didn't mind enough to find something else.
Part from safety issues I haven't really seen any convincing argument against "too hot" coffee.
And come to think of it, you won't buy a coffee (at a drive-through!) when you are one minute away from your destination.
You most certainly have time to let it cool down and enjoy it at your preferred temperature. Even if you intend to consume it as soon as possible.
See Table 5, which includes "After dilution or cooling".
Why would anyone think it is OK to serve a drink so hot that it can cause severe burns?
https://www.hsph.harvard.edu/nutritionsource/food-features/t...
And it doesn’t make the grossness of the accident into prima facia evidence of the culpability of any one party up the line, as it’s always presented in these discussions.
"Black and oolong teas are generally steeped in hot or boiling water (about 210º F) and brewed for about 4-5 minutes. Green tea is steeped at a slightly lower temperature 180º F from 4-15 minutes. The longer tea steeps, the stronger the flavor with bitter notes."
And I don't think anyone recommends you put hot beverages in your crotch area.
It also seems clear to me that one should take into account that someone is having the drink in the car and not at the table if you’re operating a drive-through restaurant.
Additionally - the detail often left out of all the armchair analysis is the customer placed the fresh cup of coffee between her legs while in her car, and removed the lid. Her legs crushed the now-unstable cup... and she was unsurprisingly burned.
Any temperature above 100*F is going to burn. There is no safe temperature above 100*F that is not going to cause 2nd and 3rd degree burns.