80-90 Fahrenheit is barely warm. It was 80-90C, which is just a hair under boiling and will absolutely do serious damage. That's not serving temperature - that

80-90 Fahrenheit is barely warm. It was 80-90C, which is just a hair under boiling and will absolutely do serious damage. That's not serving temperature - that's brewing temperature. You have to work to keep coffee that hot, it's not something that happens passively.