Is Guinness defying the laws of physics? Not exactly. Every Guinness is supposed to be poured into a specially crafted tulip glass. But that glass is designed to manipulate the bubbles in the beer ...

There is a growing trend perfect for St. Patrick’s Day where people try to get the liquid and foam in a glass to align with the middle of the G in the Guinness logo after the first sip... or gulp.

And how it’s served matters, too, with preference being in the Guinness glass. Diageo, the company that owns Guinness, even has an “expert guide” to pouring and serving Guinness available ...