Beer test

A cold beer is one of the biggest desires of humans during the summer time. But when is the beer the correct temperature? How do we know when it's cold enough?

We hardly ever get it right!!!!

But now the ultimate method to determine whether a beer is cold enough, or not, has been discovered.

The Method

By applying the method we can see that the left beer is cool enough but the right isn't.

Here's the proof.

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Again, thanks to Marc