If you have ever enjoyed a pint of Guinness, you may have noticed that the bubbles in the glass travel downwards. How can they do this? It is all in the fluid dynamics of Guinness and its very ...

The perfect pint of Guinness should be poured at 45-degress and served at 42.8°F (6°C), with a head no thicker than 0.7 of an inch, according to experts.

So, the next time you pour Guinness, remember O'Connor's tips. After all, it's always good to know everything about a beer before you pour it . Read the original article on Tasting Table .