Just to clarify ALL hot coffee can cause 3rd degree burns if handled improperly. Even 140F can cause 3rd degree burns in 1 second, while it was a 5 second exposure in this case. Hot coffee is generally served hotter in the 160-180F range based on consumer preferences. There's milliseconds difference between 160F and 190F, the greatest change is between 120F and 140F where below that takes several minutes and above it is almost instant. The case was asking for money, McDonald's was not forced to change temperatures. The industry voluntarily started adding "caution: hot" labeling to products people already knew were hot to avoid lawsuits. As almost all hot food and hot beverages have the potential to cause 3rd degree burns with prolonged skin exposure. Again in this context prolonged means 1 second, often injury can be avoided with immediate reaction. This case was an anomaly because she simply did not react until well after the time it would take for any hot coffee to cause 3rd degree burns.