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philipwhiuktoday at 4:52 PM1 replyview on HN

Kind of.

Guinness glasses are exactly a pint, so the Guinness head means you're getting less than a pint of actual beer.

This is tolerated/expected and so de facto correct but de jure perhaps not.


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lucideertoday at 6:31 PM

> the Guinness head means you're getting less than a pint of actual beer

I hate to be pedantic but pint being volumetric, you're still getting a pint, independent of density. Also - a nitrogen head doesn't dissipate, so you never get a gap.

I'm now curious though whether a nitrogen head is less dense than a CO2 head...

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