Red like a Guinness

Usually people do not believe me when I tell them that a Guinness is not deep black but red like a ruby (officially "dark ruby").

So here are some pictures revealing the "truth".

Here is a ruby:

Here is a glass of Guinness (well, it seems that I already drunk a bit of it):

Still thinking it's black? OK, let's take a powerful light like a Mag-lite and put it behind the glass:

I hope I convinced you.

Thanks to Brian Kell for the ruby picture. As well, you can do whatever you want with the 4 other pictures of this post.