This study is Irish, so I think they likely use 170ml cups? That means a normal mug of ~500ml is 3 cups.

Perhaps they even use US coffee cup size, which is 118ml?

Honestly, using an unit of measurement that varies from 118ml to 250ml in a scientific paper brings the whole paper into question.

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skrebbel 2 days ago | parent | next [-]

> a normal mug of ~500ml

woa where is half a liter of coffee a "normal" portion?

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tomjakubowski 2 days ago | parent [-]

500mL is a pretty typical size for a travel mug/tumblr. I'd consider that two or three servings though.

	▲	sph a day ago \| parent [-]
		500mL of Americano (diluted coffee) is not 500mL of espresso. I challenge you to drink half a litre of espresso in one sitting.

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hootz 2 days ago | parent | prev | next [-]

Okay, you'll definitely have to explain the NORMAL mug of HALF A LITER!

	▲	kristofferR 2 days ago \| parent [-]
		I'd say it reaches abnormal above 500ml, but there's nothing abnormal about mugs like this: https://www.ikea.com/no/en/p/faergklar-mug-light-pink-506048... It seems people think 500ml is more liquid than it is due to how thin cans/bottles are comparatively.

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fc417fc802 2 days ago | parent | prev | next [-]

The reactions to your comment got me curious enough to check. The mug I use for coffee and tea holds almost exactly 400 mL when comfortably full and I used to drink 2 of those per day (across 12 hours or so). Based on that, personally I'd consider ~800 mL of black coffee to be on the high end of moderate consumption.

	▲	kristofferR 2 days ago \| parent [-]
		Yeah, people think 400-500ml is a lot for some reason, but it’s not a abnormal coffee mug size at all. The Ember mug I have is around 430ml.

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finghin 2 days ago | parent | prev | next [-]

I’m Irish.

A NORMAL mug of 500ml??? this is insanity to me

	▲	kristofferR 2 days ago \| parent [-]
		I didn't say 500ml, I said ~500ml. 500ml is quite large, but 400+ ain’t really that abnormal.

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ashirviskas 2 days ago | parent | prev [-]

Does it matter what size the cup is? Usually you get the same amount of coffee water + additional water/milk/whatever.

	▲	SecretDreams 2 days ago \| parent [-]
		????