Sarah Katz, 21, had a heart condition and was not aware of the drink’s caffeine content, which exceeded that of cans of Red Bull and Monster energy drinks combined, according to a legal filing

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[–] 2 points 2 years ago (3 children)

There were several factors at once. Serving to a customer at 180+ is a bit high. And that particular machine was slightly overcalibrated. It was 193 degrees if I recall, not 180-190. And then, yeah, the cups are crap.

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  • [–] 1 point 2 years ago (2 children)

    I didn't fully appreciate our mouth's tolerance to temperature until I was lazy the other day and used my finger to stir some tea instead of going back to the kitchen and getting a spoon.

    Blazing hot for a finger, nice and refreshing for a drink

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  • [–] 2 points 2 years ago (1 child)

    Gonna suggest it's less simple than that. The mouth only touches a small amount of fluid at once. The temperature plummets really quickly when you sip the hot coffee.

    When you stick a finger in the coffee, there's a lot more coffee keeping the liquid contacting your finger hot. That's why you sip hot coffee. If you do a quick dip with your finger, it won't burn.

    It's similar to how you can accidentally brush a hot pan and not get a burn.

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